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A341305
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Fourier coefficients of the modular form (1/28)*(E_6(t)+27*E_6(3*t)).
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5
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1, -18, -594, -4878, -19026, -56268, -160974, -302544, -608850, -1185858, -1856844, -2898936, -5156046, -6683292, -9983952, -15248628, -19483218, -25557444, -39133314, -44569800, -59475276, -81989424, -95664888, -115854192, -164998350, -175837518, -220548636, -288163998, -319789008, -369200700
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OFFSET
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0,2
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LINKS
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MAPLE
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local a;
if modp(n, 3) = 0 then
end if;
%/28 ;
end proc:
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MATHEMATICA
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A013973[n_] := If[n == 0, 1, -504 DivisorSigma[5, n]];
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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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