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A319202
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a(n) is the A-sequence for the Riordan matrix R = (1/(1- x^2 - x^3), x/(1 - x^2 - x^3)) from A104578.
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2
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1, 0, 1, 1, -1, -3, 0, 10, 10, -28, -70, 42, 348, 198, -1353, -2431, 3575, 15587, 702, -74698, -89726, 264214, 753236, -441864, -4308174, -2823020, 18594787, 36373695, -52468405, -249712725, -24858975, 1267523445, 1639209195, -4671244455, -14174703810
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OFFSET
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0,6
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COMMENTS
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See the comment in A319201, and the recurrence formula for A104578 from the A- and Z-sequences.
The Z-sequence for R is given by a(n+1), n >= 0.
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LINKS
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FORMULA
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a(n) = [t^n] (1/f(t)), where f(t) = F^{[-1]}(t)/t, with the compositional inverse F^{[-1]}(t) of F(x) = 1/(1 - x^2 - x^3). The expansion of f is given in A319201.
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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STATUS
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approved
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