id:A001504 - OEIS Search Results

Search: id:A001504

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(3n+1)(3n+2).

+0
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2, 20, 56, 110, 182, 272, 380, 506, 650, 812, 992, 1190, 1406, 1640, 1892, 2162, 2450, 2756, 3080, 3422, 3782, 4160, 4556, 4970, 5402, 5852, 6320, 6806, 7310, 7832, 8372, 8930, 9506, 10100, 10712, 11342, 11990, 12656, 13340, 14042, 14762 (list; graph; listen)

	OFFSET	`0,1`
	FORMULA	`Sum(k>=0, 1/a(k)) = Pi/3/sqrt(3) - Benoit Cloitre (benoit7848c(AT)orange.fr), Aug 20 2002`
	CROSSREFS	`Cf. A001504(n)= A060544(n+1)*2.` `Adjacent sequences: A001501 A001502 A001503 this_sequence A001505 A001506 A001507` `Sequence in context: A059211 A139271 A133217 this_sequence A136905 A003283 A135188`
	KEYWORD	`nonn`
	AUTHOR	`njas`

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Last modified October 12 15:26 EDT 2008. Contains 144830 sequences.

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