id:A130554 - OEIS Search Results

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Denominators of partial sums for a series for 2*Pi*sqrt(3)/9.

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1, 6, 5, 140, 1260, 110, 60060, 72072, 680680, 12932920, 38798760, 11440660, 185910725, 5736673800, 4621209450, 3438179830800, 10314539492400, 140744203600, 59365905078480, 127212653739600, 4056670180362800 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Numerators are given in A130553.` `For the rationals r(n):=2sum(1/(jbinomial(2*j,j)),j=1..n), n>=1, the A. Comtet reference and a W. Lang link see A130553.`
	FORMULA	`a(n)=denomintor(r(n)), n>=1,`
	CROSSREFS	`Sequence in context: A137763 A029763 A038259 this_sequence A037054 A020845 A028971` `Adjacent sequences: A130551 A130552 A130553 this_sequence A130555 A130556 A130557`
	KEYWORD	`nonn,frac,easy`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de) Jul 13 2007`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

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