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A069183
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Expansion of 1/((1-x)(1-x^2)^2(1-x^3)(1-x^6)).
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1
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1, 1, 3, 4, 7, 9, 15, 18, 27, 33, 45, 54, 72, 84, 108, 126, 156, 180, 220, 250, 300, 340, 400, 450, 525, 585, 675, 750, 855, 945, 1071, 1176, 1323, 1449, 1617, 1764, 1960, 2128, 2352, 2548, 2800, 3024, 3312, 3564, 3888, 4176, 4536, 4860, 5265, 5625, 6075
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OFFSET
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0,3
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LINKS
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Index entries for linear recurrences with constant coefficients, signature (1,2,-1,-2,-1,3,0,-3,1,2,1,-2,-1,1).
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FORMULA
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G.f.: 1/((1-x)*(1-x^2)^2*(1-x^3)*(1-x^6)).
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MATHEMATICA
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CoefficientList[Series[1/((1-x)(1-x^3)(1-x^6)(1-x^2)^2), {x, 0, 100}], x] (* Jinyuan Wang, Mar 15 2020 *)
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PROG
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(PARI) a(n) = polcoeff(1/((1-x)*(1-x^2)^2*(1-x^3)*(1-x^6)+x*O(x^n)), n);
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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