Hexagonal pyramidal number

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

A hexagonal pyramidal number is a pyramidal number formed by adding the first n hexagonal numbers. The first few hexagonal pyramidal numbers are:

1, 7, 22, 50, 95, 161, 252, 372, 525, 715, 946, 1222, 1547, 1925 (sequence A002412 in the OEIS).

The nth number in this sequence, representing the sum of the first n hexagonal numbers, is given by the formula

References

  • Hexagonal pyramidal number at MathWorld


Retrieved from "https://en.wikipedia.org/w/index.php?title=Hexagonal_pyramidal_number&oldid=817820853"
This content was retrieved from Wikipedia : http://en.wikipedia.org/wiki/Hexagonal_pyramidal_number
This page is based on the copyrighted Wikipedia article "Hexagonal pyramidal number"; it is used under the Creative Commons Attribution-ShareAlike 3.0 Unported License (CC-BY-SA). You may redistribute it, verbatim or modified, providing that you comply with the terms of the CC-BY-SA