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Q: Is 1 1 2 3 5 an example of a pyramidal sequence?
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What is pyramidal number sequence?

It is a sequence in which the numbers represent the number of spheres in a pyramidal stack of spheres. There are a number of possible configurations for stacking spheres - a visit to fruit stalls may show you options. The square based pyramidal numbers are given by the sums of the first n square numbers. So U(1) = 1^1 = 1 U(2) = 1^2 + 2^2 = 1 + 4 = 5 and so on U(n) = 1^2 + 2^2 + ... + n^2 = n(n+1)(2n+1)/6. However, there are also triangle based pyramidal numbers and hexagon based pyramidal numbers, since these configuration also give stable stacks.


How are the sums of Fibonacci added?

The two number before a number are added to get the next number. So if the first numbers are 0,1,1,2,3,5, and 8 for example. You add 0+1=1 which is the third number. 1+1=2 which is the 4th number in the sequence etc. Of course, you can do this forever so the sequence is infinite. In symbols we write the sum as Fn =Fn-1 +Fn-2 The n refers to the nth number in the sequence. For example if n=4, than Fn =2


What is the rule for the Fibonacci numbers sequence?

The Fibonacci sequence(1,1,2,3,5,8,13,21…) is made by the two previous numbers being added together to make the next number. For example 1+1=2, 1+2=3, 2+3=5, 3+5=8 and so on forever…


6 21 40 63 90 121 what is the rule for this sequence?

(1) Take the difference of the two previous numbers in sequence (2) Add 4 to this difference. (3) Take the number from step #2 and add it to the previous number in the sequence. For example, to find the next number in the sequence: (1) 121 - 90 = 31 (2) 31 + 4 = 35 (3) 121 + 35 = 156


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.

Related questions

What is the form of the nth term of a triangular pyramidal number sequence?

1/6 n(n+1)(n+2)


What is pyramidal number sequence?

It is a sequence in which the numbers represent the number of spheres in a pyramidal stack of spheres. There are a number of possible configurations for stacking spheres - a visit to fruit stalls may show you options. The square based pyramidal numbers are given by the sums of the first n square numbers. So U(1) = 1^1 = 1 U(2) = 1^2 + 2^2 = 1 + 4 = 5 and so on U(n) = 1^2 + 2^2 + ... + n^2 = n(n+1)(2n+1)/6. However, there are also triangle based pyramidal numbers and hexagon based pyramidal numbers, since these configuration also give stable stacks.


What is the fibinicci sequence?

The Fibonacci sequence is a sequence of numbers where each number in the sequence is the sum of the two numbers right before it. for example: 11235812 <-------Fibonacci Sequence 1 1+1=2 1+2=3 2+3=5 3+5=8 5+8=12


What are the sites of origin of the pyramidal tract?

the pyramidal cells in layer 5 of areas 4, 6 ,3-1&2


What was the fibbonacci sequence?

It is a sequence on numbers that each number is a sum of the 2 previous numbers. for example, 1,(1+0=)2,(1+2=)3,(2+3=)5,etc. made by fibbonacci.


Can a recursive formula produce an arithmetic or geometric sequence?

arithmetic sequence * * * * * A recursive formula can produce arithmetic, geometric or other sequences. For example, for n = 1, 2, 3, ...: u0 = 2, un = un-1 + 5 is an arithmetic sequence. u0 = 2, un = un-1 * 5 is a geometric sequence. u0 = 0, un = un-1 + n is the sequence of triangular numbers. u0 = 0, un = un-1 + n(n+1)/2 is the sequence of perfect squares. u0 = 1, u1 = 1, un+1 = un-1 + un is the Fibonacci sequence.


What is the general term of the sequence 0 1 1 2 2 3 3.?

The general term for the sequence 0, 1, 1, 2, 2, 3, 3 is infinite sequence.


How is the Fibonacci sequence defined?

the sequence of numbers when the first 2 numerals are 0 then 1 followed by the addition of the past t2 numbers example-0,1,1,2,3,5,8,13 etc


How are the sums of Fibonacci added?

The two number before a number are added to get the next number. So if the first numbers are 0,1,1,2,3,5, and 8 for example. You add 0+1=1 which is the third number. 1+1=2 which is the 4th number in the sequence etc. Of course, you can do this forever so the sequence is infinite. In symbols we write the sum as Fn =Fn-1 +Fn-2 The n refers to the nth number in the sequence. For example if n=4, than Fn =2


How do you find the nth term in a sequence?

Finding the nth term is much simpler than it seems. For example, say you had the sequence: 1,4,7,10,13,16 Sequence 1 First we find the difference between the numbers. 1 (3) 4 (3) 7 (3) 10 (3) 13 (3) 16 The difference is the same: 3. So the start of are formula will be 3n. If it was 3n, the sequence would be 3,6,9,12,15,18 Sequence 2 But this is not our sequence. Notice that each number on sequence 2 is 2 more than sequence 1. this means are final formula will be: 3n+1 Test it out, it works!


What is the rule for the Fibonacci numbers sequence?

The Fibonacci sequence(1,1,2,3,5,8,13,21…) is made by the two previous numbers being added together to make the next number. For example 1+1=2, 1+2=3, 2+3=5, 3+5=8 and so on forever…


1 1 2 3 5 8 what kind of sequence is this?

the Fibonacci sequence