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A002623 G.f.: 1/((1-x)^3*(1-x^2)).
(Formerly M2640 N1050)
+0
38
1, 3, 7, 13, 22, 34, 50, 70, 95, 125, 161, 203, 252, 308, 372, 444, 525, 615, 715, 825, 946, 1078, 1222, 1378, 1547, 1729, 1925, 2135, 2360, 2600, 2856, 3128, 3417, 3723, 4047, 4389, 4750, 5130, 5530, 5950, 6391, 6853, 7337, 7843, 8372, 8924, 9500 (list; graph; listen)
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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.


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