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Search: id:A113424
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A113424 (6n)!/((3n)!(2n)!n!). +0
1
1, 60, 13860, 4084080, 1338557220, 465817912560, 168470811709200, 62588625639883200, 23717177328413240100, 9124964373613212524400, 3553261127084984957001360, 1397224499394244497967972800 (list; graph; listen)
OFFSET

0,2

COMMENT

Appears in Ramanujan's theory of elliptic functions of signature 6.

FORMULA

G.f.: F(1/6, 5/6; 1; 432x).

PROGRAM

(PARI) a(n)=if(n<0, 0, (6*n)!/(3*n)!/(2*n)!/n!)

CROSSREFS

Sequence in context: A130214 A003750 A001525 this_sequence A009564 A001460 A003794

Adjacent sequences: A113421 A113422 A113423 this_sequence A113425 A113426 A113427

KEYWORD

nonn

AUTHOR

Michael Somos, Oct 31 2005

page 1

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.


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