References to A001652

a(n) = 6*a(n-1) - a(n-2) + 2 with a(0) = 0, a(1) = 3.
0, 3, 20, 119, 696, 4059, 23660, 137903, 803760, 4684659, 27304196, 159140519

1 seqfan posts

Mon Mar 22 16:25:58 CET 2010    [seqfan] Re: Sum +-j +-(j+1) +-(j+2) ... +-i equals zero.
Index of A-numbers in seqfan: by ascending order    by month    by frequency    by keyword
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