**Triangle read by rows: row n gives coefficients of polynomial P_n(x)= U_n(X,1) + 3 * U_{n-2}(X,1) where U is the Chebyshev polynomial of the second kind, in order of decreasing exponents**

*1, 1, 0, 1, 0, 2, 1, 0, 1, 0, 1, 0, 0, 0, 2, 1, 0, 1, 0, 3, 0, 1, 0, 2, 0, 3, 0, 2, 1, 0, 3*

*7 seqfan posts*

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

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