id:A102394 - OEIS Search Results

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A wicked odious sequence.

+0
2

0, 2, 3, 0, 5, 0, 0, 8, 9, 0, 0, 12, 0, 14, 15, 0, 17, 0, 0, 20, 0, 22, 23, 0, 0, 26, 27, 0, 29, 0, 0, 32, 33, 0, 0, 36, 0, 38, 39, 0, 0, 42, 43, 0, 45, 0, 0, 48, 0, 50, 51, 0, 53, 0, 0, 56, 57, 0, 0, 60, 0, 62, 63, 0, 65, 0, 0, 68, 0, 70, 71, 0, 0, 74, 75, 0, 77, 0, 0, 80, 0, 82, 83, 0, 85, 0 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Odious numbers plus one (A000069(n)+1) appear at positions indexed by the odious numbers, 0 otherwise. A000027(n)=A102393(n)+A102394(n).`
	FORMULA	`a(n)=(n+1)(1-(-1)^A000120(n))/2; a(n)=(n+1)(1-(-1)^A010060(n))/2.`
	CROSSREFS	`Cf. A102392.` `Sequence in context: A121598 A140326 A126436 this_sequence A085563 A071375 A061397` `Adjacent sequences: A102391 A102392 A102393 this_sequence A102395 A102396 A102397`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Jan 06 2005`

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Last modified December 1 13:27 EST 2009. Contains 167806 sequences.

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