Definition:Heptagonal Pyramidal Number/Sequence
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Sequence of Heptagonal Pyramidal Numbers
The sequence of heptagonal pyramidal numbers begins as follows:
- $0, 1, 8, 26, 60, 115, 196, 308, 456, 645, 880, 1166, 1508, 1911, 2380, \ldots$
This sequence is A002413 in the On-Line Encyclopedia of Integer Sequences (N. J. A. Sloane (Ed.), 2008).