A073595 - OEIS

This site is supported by donations to The OEIS Foundation.

A073595

Denominator of b(n) = sum(k=1,n,(-1)^(k+1)/k*sum(i=0,k-1,(-1)^i/(2*i+1))).

1, 3, 45, 315, 1575, 51975, 4729725, 4729725, 18555075, 4583103525, 50414138775, 1159525191825, 793359341775, 15073827493725, 2185704986590125, 67756854584293875, 1151866527932995875, 3455599583798987625 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	FORMULA	`lim n -> infinity b(n) = G the Catalan constant`
	PROG	`(PARI) a(n)=denominator(sum(k=1, n, (-1)^(k+1)/ksum(i=0, k-1, (-1)^i/(2i+1))))`
	CROSSREFS	`Cf. A073594.` `Sequence in context: A069955 A062346 A002682 * A117972 A061532 A060242` `Adjacent sequences: A073592 A073593 A073594 * A073596 A073597 A073598`
	KEYWORD	`easy,frac,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Aug 28 2002`

Content is available under The OEIS End-User License Agreement .

Last modified February 17 07:41 EST 2012. Contains 205998 sequences.