id:A062754 - OEIS Search Results

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GCD(n, sigma(n+1)).

+0
1

1, 2, 1, 2, 1, 2, 1, 1, 9, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 4, 3, 2, 1, 1, 1, 2, 1, 2, 1, 2, 1, 16, 3, 2, 7, 2, 1, 2, 3, 2, 1, 2, 1, 2, 9, 2, 1, 3, 1, 2, 1, 2, 1, 18, 5, 8, 3, 2, 1, 2, 1, 2, 1, 4, 1, 2, 1, 4, 3, 2, 1, 2, 1, 2, 5, 4, 7, 2, 1, 1, 9, 2, 1, 12, 1, 2, 3, 2, 1, 2, 7, 4, 3, 2, 1, 2, 1, 2, 1, 2, 1, 2 (list; graph; listen)

	OFFSET	`1,2`
	PROGRAM	`(PARI) j=[]; for(n=1, 200, j=concat(j, gcd(n, sigma(n+1)))); j`
	CROSSREFS	`Sequence in context: A104248 A069349 A167404 this_sequence A045888 A107279 A078461` `Adjacent sequences: A062751 A062752 A062753 this_sequence A062755 A062756 A062757`
	KEYWORD	`nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Jul 15 2001`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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