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A069986 Denominator of b(n)=binomial(2n,n)^3*(42n+5)/2^(12n+4). 1
16, 8192, 33554432, 17179869184, 562949953421312, 288230376151711744, 1180591620717411303424, 604462909807314587353088, 158456325028528675187087900672, 81129638414606681695789005144064 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

FORMULA

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

CROSSREFS

Cf. A069985.

Sequence in context: A088654 A079920 A203390 * A151641 A006448 A017092

Adjacent sequences:  A069983 A069984 A069985 * A069987 A069988 A069989

KEYWORD

easy,frac,nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), May 01 2002

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Last modified February 14 20:13 EST 2012. Contains 205663 sequences.