Coefficient triangle sequence of a polynomial recursion: p(x,n)=(x + 1)*(p(x, n - 1) + 3^(n - 1)*x); Row sums are 2*3^n.
2, 3, 3, 2, 14, 2, 2, 25, 25, 2, 2, 54, 77, 27, 2, 2, 137, 212, 104, 29, 2, 2, 382, 592, 316
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Fri Jan 30 15:12:53 CET 2009 [seqfan] R: Seqfan Digest, Vol 4, Issue 19