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A062754 GCD(n, sigma(n+1)). 0
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; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..102.

PROG

(PARI) j=[]; for(n=1, 200, j=concat(j, gcd(n, sigma(n+1)))); j

CROSSREFS

Sequence in context: A104248 A069349 A167404 * A045888 A107279 A078461

Adjacent sequences:  A062751 A062752 A062753 * A062755 A062756 A062757

KEYWORD

nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Jul 15 2001

STATUS

approved

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Last modified May 23 00:23 EDT 2013. Contains 225585 sequences.