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

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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.

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

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) 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

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

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

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.

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

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

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.

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.

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

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

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

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!

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…

in external granular (layer 2) = stellate + small pyramidal neuronsin external pyramidal (layer 3) = medium pyramidal neurons