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A069985 Numerator of b(n)=binomial(2n,n)^3*(42n+5)/2^(12n+4). 1
5, 47, 2403, 16375, 7417375, 53760105, 3167882487, 23607123111, 90865711740375, 687802362944125, 41879801005939325, 320193409525211313, 157265345845813485371, 1210756529837794953125, 74775114531441956109375 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..14.

FORMULA

sum(n>=1, b(n))=1/Pi (Ramanujan)

CROSSREFS

Cf. A069986.

Sequence in context: A159480 A196460 A093612 * A086776 A259502 A247705

Adjacent sequences:  A069982 A069983 A069984 * A069986 A069987 A069988

KEYWORD

easy,frac,nonn

AUTHOR

Benoit Cloitre, May 01 2002

STATUS

approved

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Last modified March 27 04:08 EDT 2017. Contains 284144 sequences.