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

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== References ==

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

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