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A004006 C(n,1)+C(n,2)+C(n,3), or n*(n^2+5)/6. +0
34
0, 1, 3, 7, 14, 25, 41, 63, 92, 129, 175, 231, 298, 377, 469, 575, 696, 833, 987, 1159, 1350, 1561, 1793, 2047, 2324, 2625, 2951, 3303, 3682, 4089, 4525, 4991, 5488, 6017, 6579, 7175, 7806, 8473, 9177, 9919, 10700, 11521, 12383, 13287, 14234, 15225 (list; graph; listen)
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Last modified December 7 23:50 EST 2009. Contains 170430 sequences.


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