id:A073595 - OEIS Search Results

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

+0
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1, 3, 45, 315, 1575, 51975, 4729725, 4729725, 18555075, 4583103525, 50414138775, 1159525191825, 793359341775, 15073827493725, 2185704986590125, 67756854584293875, 1151866527932995875, 3455599583798987625 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`lim n -> infinity b(n) = G the Catalan constant`
	PROGRAM	`(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 this_sequence A117972 A061532 A060242` `Adjacent sequences: A073592 A073593 A073594 this_sequence A073596 A073597 A073598`
	KEYWORD	`easy,frac,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Aug 28 2002`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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