id:A081767 - OEIS Search Results

Search: id:A081767

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Numbers n such that n^2-1 divides binomial(2n,n).

+0
2

2, 16, 21, 29, 43, 46, 67, 78, 89, 92, 105, 111, 141, 154, 157, 171, 188, 191, 205, 210, 211, 221, 229, 232, 239, 241, 267, 277, 300, 309, 313, 316, 323, 326, 331, 346, 369, 379, 415, 421, 430, 436, 441, 443, 451, 460, 461, 465, 469, 477, 484, 494, 497, 528 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Is a(n) asymptotic to c*n with 9<c<10 ?` `Except for 2, a subset of A004782.`
	CROSSREFS	`Sequence in context: A022370 A050850 A082475 this_sequence A093026 A118954 A119599` `Adjacent sequences: A081764 A081765 A081766 this_sequence A081768 A081769 A081770`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 09 2003`

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Last modified September 8 08:06 EDT 2008. Contains 143486 sequences.

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