id:A004780 - OEIS Search Results

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Binary expansion contains 2 adjacent 1's.

+0
3

3, 6, 7, 11, 12, 13, 14, 15, 19, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 35, 38, 39, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 67, 70, 71, 75, 76, 77, 78, 79, 83, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100 (list; graph; listen)

	OFFSET	`0,1`
	COMMENT	`Complement of A003714. It appears that n is in the sequence if and only if C(3n,n) is even. - Benoit Cloitre (benoit7848c(AT)orange.fr), Mar 09 2003`
	CROSSREFS	`Cf. A005809.` `Sequence in context: A115127 A028754 A028795 this_sequence A051146 A136272 A101184` `Adjacent sequences: A004777 A004778 A004779 this_sequence A004781 A004782 A004783`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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