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A051029
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Ramanujan's b-series: expansion of (2-26x-12x^2)/(1-82x-82x^2+x^3).
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7
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2, 138, 11468, 951690, 78978818, 6554290188, 543927106802, 45139395574362, 3746025905565260, 310875010766342202, 25798879867700837522, 2140996154008403172108, 177676881902829762447458, 14745040201780861879966890, 1223660659865908706274804428
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OFFSET
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0,1
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COMMENTS
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REFERENCES
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For additional references and links see A051028.
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LINKS
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FORMULA
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G.f.: (2-26*x-12*x^2)/((1+x)*(1-83*x+x^2)).
X(n+1) = AX(n), where X(n) = transpose(A051028(n), A051029(n), A051030(n)) and A = matrix(3,3,[63,104,-68; 64,104,-67; 80,131,-85)]). - Emeric Deutsch, Oct 14 2006
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MAPLE
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g:=(2-26*x-12*x^2)/(1-82*x-82*x^2+x^3): gser:=series(g, x=0, 20): seq(coeff(gser, x, n), n=0..12); # Emeric Deutsch, Oct 14 2006
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MATHEMATICA
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CoefficientList[Series[(2 - 26 x - 12 x^2)/(1 - 82 x - 82 x^2 + x^3), {x, 0, 33}], x] (* Vincenzo Librandi, Jul 22 2015 *)
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PROG
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(PARI) Vec((2-26*x-12*x^2)/(1-82*x-82*x^2+x^3) + O(x^30)) \\ Michel Marcus, Feb 29 2016
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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