id:A085477 - OEIS Search Results

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Numbers n such that there is at least one k dividing (n-1)!-1 (n<=k<=2n).

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1, 2, 4, 6, 10, 12, 16, 18, 22, 28, 30, 36, 38, 40, 42, 43, 45, 46, 47, 49, 52, 53, 54, 56, 58, 60, 66, 68, 70, 72, 76, 78, 82, 84, 88, 96, 97, 99, 100, 102, 106, 108, 110, 112, 118, 120, 121, 123, 124, 126, 130, 132, 136, 138, 142, 148, 150, 154, 156, 162, 166, 169, 172 (list; graph; listen)

	OFFSET	`1,2`
	PROGRAM	`(PARI) for(n=1, 250, if(sum(k=n, 2*n, if(((n-1)!-1)%k, 0, 1))>0, print1(n, ", ")))`
	CROSSREFS	`Sequence in context: A105965 A107304 A082417 this_sequence A128984 A075728 A006093` `Adjacent sequences: A085474 A085475 A085476 this_sequence A085478 A085479 A085480`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Aug 14 2003`

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Last modified July 6 17:22 EDT 2008. Contains 140988 sequences.

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