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 A113921 Series expansion of elliptical invariant for the tetrahedron to 30 powers. 0
 1, 432, 46656, 2561328, 98724096, 3095854128, 84653066304, 2099959707312, 48434918630400, 1055774529946800, 21998459314138176, 441781752631617072, 8604022581526507776, 163280569502277507888, 3030565281106746286656 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 REFERENCES Elliptic Curves, McKean and Moll, 1997, Cambridge University Press, page 22 LINKS FORMULA b(n)=coefficient expansion of (x^4 - 2*I*Sqrt[3]*x^2 + 1)^3/(x^4 + 2*I*Sqrt[3]*x^2 + 1)^3, a(n) = Abs[b(n)*b(n)] MATHEMATICA b = Flatten[{{1}, Table[Coefficient[Series[(x^4 - 2*I*Sqrt[3]*x^2 + 1)^3/(x^4 + 2*I*Sqrt[3]*x^2 + 1)^3, {x, 0, 30}], x^n], {n, 1, 30}]}] a = Table[Abs[b[[n]]*b[[n]]], {n, 1, Length[b]}] CROSSREFS Sequence in context: A281986 A299861 A269149 * A269211 A269094 A269273 Adjacent sequences:  A113918 A113919 A113920 * A113922 A113923 A113924 KEYWORD nonn AUTHOR Roger L. Bagula, Jan 29 2006 STATUS approved

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Last modified August 11 09:58 EDT 2020. Contains 336423 sequences. (Running on oeis4.)