Hexagonal pyramidal number: Difference between revisions

Revision as of 12:30, 10 January 2007

Revision as of 18:16, 10 January 2007

Line 1:

{{cleanup}}

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;. these nubmers have the form <math>n(n+1)(4n-1)/6</math>.

The numbers have the form:

<math>n(n+1)(4n-1)/6</math>

== References ==

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

{{numtheory-stub}}

[[Category:Figurate numbers]]

{{cleanup}}

{{stub}}