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Search: id:A157828
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| A157828 |
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Coefficients of polynomial expansion of Golay C_12 enumeration Polynomial: p(x)=24 + 440*x^3 + 264*x^6 + x^12; q(x)=x^12*(p(1/x). |
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| 1, 0, 0, 0, 0, 0, -264, 0, 0, -440, 0, 0, 69672, 0, 0, 232320, 0, 0, -18193472, 0, 0, -91977600, 0, 0, 4699183680, 0, 0, 32281638400, 0, 0, -1199677704192, 0, 0, -10587785894400, 0, 0, 302398212602368, 0, 0, 3322258906644480, 0, 0
(list; graph; listen)
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OFFSET
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0,7
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FORMULA
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p(x)=24 + 440*x^3 + 264*x^6 + x^12;
q(x)=x^12*(p(1/x);
a(n)=coefficients(q(x)).
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MATHEMATICA
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f[x_] = 24 + 440*x^3 + 264*x^6 + x^12;
g[x] = ExpandAll[x^12*f[1/x]];
a = Table[SeriesCoefficient[ Series[1/g[x], {x, 0, 50}], n], {n, 0, 50}]
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CROSSREFS
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Adjacent sequences: A157825 A157826 A157827 this_sequence A157829 A157830 A157831
Sequence in context: A023314 A054802 A108823 this_sequence A065570 A050240 A105683
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KEYWORD
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sign
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AUTHOR
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Roger L. Bagula and Gary W. Adamson (rlbagulatftn(AT)yahoo.com), Mar 07 2009
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