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A160706
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Hankel transform of A052702(n+1).
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2
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0, 0, 0, 1, 0, -1, -2, 0, 2, 3, 0, -3, -4, 0, 4, 5, 0, -5, -6, 0, 6, 7, 0, -7, -8, 0, 8, 9, 0, -9, -10, 0, 10, 11, 0, -11, -12, 0, 12, 13, 0, -13, -14, 0, 14, 15, 0, -15, -16, 0, 16, 17, 0, -17, -18, 0, 18, 19, 0, -19, -20
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OFFSET
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0,7
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COMMENTS
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a(n+5) is the Hankel transform of A052702(n+3).
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LINKS
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FORMULA
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G.f.: x^3*(1-x^2)/(1 + x^3)^2.
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MATHEMATICA
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LinearRecurrence[{1, -1, -1, 1, -1}, {0, 0, 0, 1, 0}, 100] (* G. C. Greubel, May 02 2018 *)
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PROG
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(PARI) x='x+O('x^50); concat([0, 0, 0], Vec(x^3*(1-x^2)/(1 + x^3)^2)) \\ G. C. Greubel, May 02 2018
(Magma) m:=50; R<x>:=PowerSeriesRing(Integers(), m); [0, 0, 0] cat Coefficients(R!(x^3*(1-x^2)/(1 + x^3)^2)); // G. C. Greubel, May 02 2018
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CROSSREFS
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KEYWORD
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easy,sign
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AUTHOR
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STATUS
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approved
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