id:A087966 - OEIS Search Results

Search: id:A087966

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a(n)=GCD[ -1+2^n, n^2].

+0
1

1, 1, 1, 1, 1, 9, 1, 1, 1, 1, 1, 9, 1, 1, 1, 1, 1, 27, 1, 25, 49, 1, 1, 9, 1, 1, 1, 1, 1, 9, 1, 1, 1, 1, 1, 27, 1, 1, 1, 25, 1, 441, 1, 1, 1, 1, 1, 9, 1, 1, 1, 1, 1, 81, 1, 1, 1, 1, 1, 225, 1, 1, 49, 1, 1, 9, 1, 1, 1, 1, 1, 27, 1, 1, 1, 1, 1, 9, 1, 25, 1, 1, 1, 441, 1, 1, 1, 1, 1, 27, 1, 1, 1, 1, 1, 9, 1, 1 (list; graph; listen)

	OFFSET	`1,6`
	EXAMPLE	`n=6: GCD[64-1,36]=9=a(6)`
	CROSSREFS	`Sequence in context: A010534 A078297 A113061 this_sequence A087968 A110483 A010164` `Adjacent sequences: A087963 A087964 A087965 this_sequence A087967 A087968 A087969`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Sep 22 2003`

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Last modified December 17 13:29 EST 2009. Contains 170826 sequences.

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