**Triangle formed from even-numbered columns of triangle of expansions of powers of x in terms of Chebyshev polynomials U_n (x).**

*1, 1, 1, 2, 3, 1, 5, 9, 5, 1, 14, 28, 20, 7, 1, 42, 90, 75, 35, 9, 1, 132, 297, 275, 154, 54*

*1 seqfan posts*

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

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