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Search: id:A066404
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| A066404 |
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From expansion of Belyi function for icosahedron. |
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+0
5
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| 1, -739, 196874, -22478125, 1086128125, -35307387500, 913727546875, -20389341653125, 410010534950000, -7633186177665625, 133911227595521875, -2240979684247156250, 36090410657726350000, -563019001047724506250, 8550765894655300606250
(list; graph; listen)
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OFFSET
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0,2
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REFERENCES
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A. Erdelyi, Higher Transcendental Functions, McGraw-Hill, 1955, Vol. 3, p. 24.
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LINKS
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N. Magot and A. Zvonkin, Belyi functions for Archimedian solids, Discrete Math., 217 (2000), 249-271.
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FORMULA
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The Belyi function is 1/Belyi function for dodecahedron.
G.f.: (1-228x+494x^2+228x^3+x^4)^3/(1+11x-x^2)^5. - Michael Somos, Dec 13 2002
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PROGRAM
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(PARI) a(n)=polcoeff((1+228*(x^3-x)+494*x^2+x^4)^3/(1+11*x-x^2)^5+x*O(x^n), n)
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CROSSREFS
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Cf. A066402, A066403, A066405. a(n)=(-1)^n*A078906(n-1).
Sequence in context: A043633 A077723 A078906 this_sequence A066402 A119264 A105391
Adjacent sequences: A066401 A066402 A066403 this_sequence A066405 A066406 A066407
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KEYWORD
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sign
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Dec 25 2001
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