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A000326 Pentagonal numbers: n(3n-1)/2.
(Formerly M3818 N1562)
+0
197
0, 1, 5, 12, 22, 35, 51, 70, 92, 117, 145, 176, 210, 247, 287, 330, 376, 425, 477, 532, 590, 651, 715, 782, 852, 925, 1001, 1080, 1162, 1247, 1335, 1426, 1520, 1617, 1717, 1820, 1926, 2035, 2147, 2262, 2380, 2501, 2625, 2752, 2882, 3015, 3151 (list; graph; listen)
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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.


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