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The triangular numbers sequence, which consists of numbers that can form an equilateral triangle, has been known since ancient times. The concept is often attributed to the ancient Greeks, especially the mathematician Pythagoras and his followers, who studied these numbers extensively. However, the sequence itself was recognized and utilized by various cultures, including the ancient Egyptians and Indians, long before formal documentation. The formula for the nth triangular number, ( T_n = \frac{n(n + 1)}{2} ), was later formalized in mathematical literature.
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What if you double a triangular number?
You get a sequence of doubled triangular numbers. This sequence can also be represented by Un = n*(n + 1), [products of pairs of consecutive integers]
Is 17 a triangular number?
No, 17 is not a triangular number. Triangular numbers are generated by the formula ( T_n = \frac{n(n+1)}{2} ), where ( n ) is a positive integer. The triangular numbers near 17 are 15 (for ( n = 5 )) and 21 (for ( n = 6 )), indicating that 17 does not fit into the sequence of triangular numbers.
Which numbers are both triangular and square?
The numbers that are both triangular and square are known as "triangular square numbers." The first few of these numbers are 1, 36, and 1225. They can be generated by solving the equation ( n(n + 1)/2 = m^2 ) for positive integers ( n ) and ( m ). The general formula for finding these numbers involves using the Pell's equation related to the sequence of triangular numbers.
Is the number 100 a triangular number?
No, the number 100 is not a triangular number. Triangular numbers are formed by the formula ( T_n = \frac{n(n + 1)}{2} ), where ( n ) is a positive integer. The closest triangular numbers to 100 are 91 (for ( n = 13 )) and 105 (for ( n = 14 )). Since 100 does not match any triangular number in this sequence, it is not triangular.
What are triangular-numbers?
Triangular numbers are numbers in the sequence 1, 1+2, 1+2+3, 1+2+3+4. This sequence can be represented by triangles as follows: (very crude figure with an even cruder browser!)xxxxxxxxxxxxxxxxxxxxand so on.The nth term of this sequence is n*(n+1)/2.Triangular numbers are numbers in the sequence 1, 1+2, 1+2+3, 1+2+3+4. This sequence can be represented by triangles as follows: (very crude figure with an even cruder browser!)xxxxxxxxxxxxxxxxxxxxand so on.The nth term of this sequence is n*(n+1)/2.
What if you double a triangular number?
You get a sequence of doubled triangular numbers. This sequence can also be represented by Un = n*(n + 1), [products of pairs of consecutive integers]
Is 17 a triangular number?
No, 17 is not a triangular number. Triangular numbers are generated by the formula ( T_n = \frac{n(n+1)}{2} ), where ( n ) is a positive integer. The triangular numbers near 17 are 15 (for ( n = 5 )) and 21 (for ( n = 6 )), indicating that 17 does not fit into the sequence of triangular numbers.
Which numbers are both triangular and square?
The numbers that are both triangular and square are known as "triangular square numbers." The first few of these numbers are 1, 36, and 1225. They can be generated by solving the equation ( n(n + 1)/2 = m^2 ) for positive integers ( n ) and ( m ). The general formula for finding these numbers involves using the Pell's equation related to the sequence of triangular numbers.
Why are these numbers called Fibonacci numbers?
Because the sequence was discovered and studied by Fibonacci of Pisa
Is the number 100 a triangular number?
No, the number 100 is not a triangular number. Triangular numbers are formed by the formula ( T_n = \frac{n(n + 1)}{2} ), where ( n ) is a positive integer. The closest triangular numbers to 100 are 91 (for ( n = 13 )) and 105 (for ( n = 14 )). Since 100 does not match any triangular number in this sequence, it is not triangular.
What are triangular-numbers?
Triangular numbers are numbers in the sequence 1, 1+2, 1+2+3, 1+2+3+4. This sequence can be represented by triangles as follows: (very crude figure with an even cruder browser!)xxxxxxxxxxxxxxxxxxxxand so on.The nth term of this sequence is n*(n+1)/2.Triangular numbers are numbers in the sequence 1, 1+2, 1+2+3, 1+2+3+4. This sequence can be represented by triangles as follows: (very crude figure with an even cruder browser!)xxxxxxxxxxxxxxxxxxxxand so on.The nth term of this sequence is n*(n+1)/2.
What is the name of the numerical sequence 1 3 6 10?
Assuming it continues 15, 21, 28, ... then it is the triangular numbers.
What numbers are their in a triangular numbers?
None. There is nobody to whom triangular numbers belong.
What are names of 5 famous math sequences?
Fibonacci Sequence: 1,1,2,3,5,8,... Perfect Squares: 1,4,9,16,25,... Triangular Numbers: 1,3,6,10,15,... Prime Numbers: 2,3,5,7,11,13,17,... 2^n: 2,4,8,16,32,64,...
What special number sequences are there?
8 5 4 9 1 7 6 10 3 2 0 This sequence is special because the numbers are in alphabetical order. The Fibonacci sequence is very special and the triangular sequence.
Is 1 1 2 3 5 an example of a pyramidal sequence?
No, the sequence 1, 1, 2, 3, 5 is not a pyramidal sequence; it is known as the Fibonacci sequence. In a pyramidal sequence, each term typically represents a figurate number, such as triangular or square numbers, which can be arranged in a geometric shape. The Fibonacci sequence, on the other hand, is generated by adding the two preceding numbers to get the next one.
What are the triangular numbers less than 50?
The triangular numbers less than 50 are 1, 3, 6, 10, 15, 21, 28, 36, 45. These numbers are formed by the formula ( T_n = \frac{n(n + 1)}{2} ), where ( n ) is a positive integer. The sequence starts with ( n = 1 ) and continues until the triangular number exceeds 50. The largest triangular number in this range is 45, corresponding to ( n = 9 ).
