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A058485
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McKay-Thompson series of class 12G for Monster.
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1
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1, -2, -3, 8, -2, -6, 18, -20, -21, 52, -24, -36, 101, -78, -93, 224, -116, -156, 398, -284, -327, 772, -412, -528, 1308, -866, -996, 2336, -1274, -1572, 3784, -2396, -2745, 6368, -3520, -4224, 9997, -6132, -6999, 16112, -8934, -10554, 24630, -14784, -16776, 38348, -21316, -24828, 57341, -33796
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refs;
listen;
history;
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internal format)
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OFFSET
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0,2
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COMMENTS
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The convolution square of this sequence is A121667: T12G(q)^2 = T6D(q^2). - G. A. Edgar, Apr 15 2017
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LINKS
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FORMULA
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Expansion of q^(1/2)*(eta(q)*eta(q^2)/(eta(q^3)*eta(q^6)))^2 in powers of q. - G. C. Greubel, Jun 18 2018
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EXAMPLE
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T12G = 1/q - 2*q - 3*q^3 + 8*q^5 - 2*q^7 - 6*q^9 + 18*q^11 - 20*q^13 - ...
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MATHEMATICA
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eta[q_]:= q^(1/24)*QPochhammer[q]; a:= CoefficientList[Series[q^(1/2) (eta[q]*eta[q^2]/(eta[q^3]*eta[q^6]))^2, {q, 0, 60}], q]; Table[a[[n]], {n, 0, 50}] (* G. C. Greubel, Jun 18 2018 *)
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PROG
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(PARI) q='q+O('q^50); Vec((eta(q)*eta(q^2)/(eta(q^3)*eta(q^6)))^2) \\ G. C. Greubel, Jun 18 2018
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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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