Category:Definitions/Second Pentagonal Numbers

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This category contains definitions related to Second Pentagonal Numbers.
Related results can be found in Category:Second Pentagonal Numbers.


The second pentagonal numbers are the integers obtained by applying the Closed Form for Pentagonal Numbers to negative $n$:

$\map {P'} n = \dfrac {-n \paren {-3 n - 1} } 2$

Pages in category "Definitions/Second Pentagonal Numbers"

The following 3 pages are in this category, out of 3 total.