n-th square pyramidal number or pyramid number

Formula

n-th square pyramidal number or pyramid number formula
Pn
the n-th square pyramidal number
n
an integer

Formula description

In mathematics, square pyramidal number, is a figurate number that represents the number of stacked spheres in a pyramid with a square base. Square pyramidal numbers also solve the problem of counting the number of squares in an n by n grid. The first few square pyramidal numbers are: 1, 5, 14, 30, 55, 91, 140, 204, 285, 385, 506, 650, 819.

Calculator (how to use calculator?)

n-th square pyramidal number or pyramid number formula
n
Pn
Precision

Formula code

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References

  1. wikipedia: Square pyramidal number.

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