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A002415 4-dimensional pyramidal numbers: n^2*(n^2-1)/12.
(Formerly M4135 N1714)
+0
53
0, 0, 1, 6, 20, 50, 105, 196, 336, 540, 825, 1210, 1716, 2366, 3185, 4200, 5440, 6936, 8721, 10830, 13300, 16170, 19481, 23276, 27600, 32500, 38025, 44226, 51156, 58870, 67425, 76880, 87296, 98736, 111265, 124950, 139860, 156066, 173641 (list; graph; listen)
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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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