Pentagonal pyramidal number

From Free net encyclopedia

Revision as of 17:38, 15 April 2006; view current revision
←Older revision | Newer revision→

A pentagonal pyramidal number is a number equal to the sum of the first few pentagonal numbers. The first few are 1, 6, 18, 40, 75, 126, 196, 288, 405, 550, 726, 936, 1183, 1470, 1800, 2176, 2601, 3078, 3610, 4200, 4851, 5566, 6348, 7200, 8125, and 9126.

See also

fr:Nombre pyramidal pentagonal