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A058740
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McKay-Thompson series of class 66B for Monster.
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1
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1, 0, 1, 1, 1, 2, 2, 3, 3, 3, 4, 6, 7, 8, 9, 10, 12, 14, 17, 19, 21, 24, 29, 33, 38, 43, 48, 54, 61, 70, 79, 88, 98, 111, 124, 140, 157, 174, 193, 214, 239, 266, 295, 326, 361, 398, 441, 488, 538, 592, 650, 715, 786, 864, 948, 1041, 1138, 1246, 1364, 1492
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OFFSET
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-1,6
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LINKS
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FORMULA
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Expansion of -1 + A, where A = eta(q^2)*eta(q^3)*eta(q^22)*eta(q^33)/( eta(q)*eta(q^6)*eta(q^11)*eta(q^66)), in powers of q. - G. C. Greubel, Jun 29 2018
a(n) ~ exp(2*Pi*sqrt(2*n/33)) / (2^(3/4) * 33^(1/4) * n^(3/4)). - Vaclav Kotesovec, Jun 29 2018
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EXAMPLE
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T66B = 1/q + q + q^2 + q^3 + 2*q^4 + 2*q^5 + 3*q^6 + 3*q^7 + 3*q^8 + 4*q^9 + ...
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MATHEMATICA
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eta[q_] := q^(1/24)*QPochhammer[q]; A:= (eta[q^2]*eta[q^3]*eta[q^22]* eta[q^33])/(eta[q]*eta[q^6]*eta[q^11]*eta[q^66]); a:= CoefficientList[Series[-1 + A, {q, 0, 60}], q]; Table[a[[n]], {n, 1, 50}] (* G. C. Greubel, Jun 29 2018 *)
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PROG
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(PARI) q='q+O('q^50); A = eta(q^2)*eta(q^3)*eta(q^22)*eta(q^33)/( q*eta(q)*eta(q^6)*eta(q^11)*eta(q^66)); Vec(-1 + A) \\ G. C. Greubel, Jun 29 2018
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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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