The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A066404 From expansion of Belyi function for icosahedron. 4
 1, -739, 196874, -22478125, 1086128125, -35307387500, 913727546875, -20389341653125, 410010534950000, -7633186177665625, 133911227595521875, -2240979684247156250, 36090410657726350000, -563019001047724506250, 8550765894655300606250 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 REFERENCES A. Erdelyi, Higher Transcendental Functions, McGraw-Hill, 1955, Vol. 3, p. 24. LINKS N. Magot and A. Zvonkin, Belyi functions for Archimedian solids, Discrete Math., 217 (2000), 249-271. FORMULA 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 PROG (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) CROSSREFS Cf. A066402, A066403, A066405. a(n)=(-1)^n*A078906(n-1). Sequence in context: A235466 A202417 A078906 * A066402 A243778 A256634 Adjacent sequences:  A066401 A066402 A066403 * A066405 A066406 A066407 KEYWORD sign AUTHOR N. J. A. Sloane, Dec 25 2001 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified June 7 05:20 EDT 2020. Contains 334837 sequences. (Running on oeis4.)