id:A069789 - OEIS Search Results

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Smallest k>n such that sigma(n) divides sigma(k).

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2, 5, 6, 12, 6, 11, 14, 24, 18, 17, 14, 28, 20, 15, 23, 25, 22, 45, 24, 26, 31, 30, 30, 38, 48, 41, 54, 39, 38, 46, 42, 68, 35, 53, 42, 117, 74, 54, 60, 58, 44, 62, 86, 60, 90, 51, 62, 75, 74, 80, 55, 97, 85, 56, 66, 87, 79, 88, 87, 78, 75, 69, 103, 192, 78, 70, 134, 82, 77 (list; graph; listen)

	OFFSET	`1,1`
	PROGRAM	`(PARI) for(s=1, 80, n=s+1; while(frac(sigma(n)/sigma(s))>0, n++); print1(n, ", "); )`
	CROSSREFS	`Sequence in context: A135476 A051217 A110975 this_sequence A086334 A057518 A153485` `Adjacent sequences: A069786 A069787 A069788 this_sequence A069790 A069791 A069792`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), May 01 2002`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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