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A002411 Pentagonal pyramidal numbers: n^2*(n+1)/2.
(Formerly M4116 N1709)
+0
47
0, 1, 6, 18, 40, 75, 126, 196, 288, 405, 550, 726, 936, 1183, 1470, 1800, 2176, 2601, 3078, 3610, 4200, 4851, 5566, 6348, 7200, 8125, 9126, 10206, 11368, 12615, 13950, 15376, 16896, 18513, 20230, 22050, 23976, 26011, 28158, 30420, 32800, 35301 (list; graph; listen)
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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


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