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A286134
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Expansion of q^(-1/2) * eta(q^5) * eta(q^6) * eta(q^7) * eta(q^210) in powers of q.
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2
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0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, -1, -1, -1, 0, 0, -1, 1, 0, 1, -1, 0, 1, 2, -1, 2, 1, 0, 1, -1, 0, 0, 1, 0, 0, -1, 0, -2, -1, 0, 0, 1, -1, -2, 1, -1, -2, -2, 1, 0, 0, 0, 1, -2, 1, 0, 0, 2, 0, 0, 2, 1, -1, 1, 0, 0, 1, 1, -1, 0, 0, 3, 2, 2, 0, -1, 0, 1, -2
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OFFSET
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0,27
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LINKS
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FORMULA
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G.f.: x^9 * Product_{k>0} (1 - x^(5 * k)) * (1 - x^(6 * k)) * (1 - x^(7 * k)) * (1 - x^(210 * k)).
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MAPLE
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seq(coeff(series(x^9*mul((1-x^(5*k))*(1-x^(6*k))*(1-x^(7*k))*(1-x^(210*k)), k=1..n), x, n+1), x, n), n=0..150); # Muniru A Asiru, Jul 29 2018
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MATHEMATICA
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eta[q_] := q^(1/24)*QPochhammer[q]; CoefficientList[Series[q^(-1/2)* eta[q^5]*eta[q^6]*eta[q^7]*eta[q^210], {q, 0, 50}], q] (* G. C. Greubel, Jul 28 2018 *)
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PROG
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(PARI) q='q+O('q^50); A=eta(q^5)*eta(q^6)*eta(q^7)*eta(q^210); concat(vector(9), Vec(A)) \\ G. C. Greubel, Jul 28 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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