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A282547
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Coefficients in q-expansion of E_2*E_4*E_6^2, where E_2, E_4, E_6 are the Eisenstein series shown in A006352, A004009, A013973, respectively.
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4
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1, -792, -648, 67840416, 3219716376, 16790031216, -1536150710304, -39898324202688, -522122582192040, -4650999065751096, -31648313780323632, -175516685804469024, -827282698744164768, -3413275186936731984, -12598131165680789568, -42296014044574387776
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OFFSET
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0,2
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LINKS
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MATHEMATICA
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terms = 16;
E2[x_] = 1 - 24*Sum[k*x^k/(1 - x^k), {k, 1, terms}];
E4[x_] = 1 + 240*Sum[k^3*x^k/(1 - x^k), {k, 1, terms}];
E6[x_] = 1 - 504*Sum[k^5*x^k/(1 - x^k), {k, 1, terms}];
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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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