**Coefficient triangle sequence of a polynomial recursion: p(x,n)=(x + 1)*(p(x, n - 1) + 3^(n - 3)*Sum[x^i, {i, 1, n - 2}]); Row sums approximate 2*3^n.**

*2, 3, 3, 2, 14, 2, 2, 25, 25, 2, 2, 36, 86, 36, 2, 2, 47, 140, 140, 47, 2, 2, 76, 241, 334*

*2 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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