Hexagonal pyramidal number: Difference between revisions

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#REDIRECT [[Pyramidal number]]

A hexagonal [[pyramidal number]]''' is a number formed by adding the first few hexagonal numbers. The first few numbers are 1, 7, 22, 50, 95.

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The numbers have the form:

<math>{n(n+1)(4n-1)}\over6</math>

== References ==

*[http://mathworld.wolfram.com/HexagonalPyramidalNumber.html Hexagonal pyramidal number at MathWorld]

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[[Category:Figurate numbers]]