a(n)=(2n^3-n^2-n+2)/2. G.f.: (1-4x+11x^2-8x^3)/(1-x)^5.
1, 1, 6, 22, 55, 111, 196, 316, 477, 685, 946, 1266, 1651, 2107, 2640, 3256, 3961
2 seqfan posts
Mon Jan 12 11:27:00 CET 2009 [seqfan] Re: Index of linear recurrences
Sun Jan 11 23:36:02 CET 2009 [seqfan] Index of linear recurrences
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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