id:A081660 - OEIS Search Results

Search: id:A081660

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n+A001045(n+1).

+0
2

1, 2, 5, 8, 15, 26, 49, 92, 179, 350, 693, 1376, 2743, 5474, 10937, 21860, 43707, 87398, 174781, 349544, 699071, 1398122, 2796225, 5592428, 11184835, 22369646, 44739269, 89478512, 178956999, 357913970, 715827913, 1431655796, 2863311563 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=2^(n+1)/3+n+(-1)^n/3`
	CROSSREFS	`Cf. A001045, A081659.` `Adjacent sequences: A081657 A081658 A081659 this_sequence A081661 A081662 A081663` `Sequence in context: A074027 A018156 A051293 this_sequence A080084 A065093 A129299`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Mar 26 2003`

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Last modified October 11 09:12 EDT 2008. Contains 144832 sequences.

AT&T Labs Research