A090704 - OEIS

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A090704

Numbers n such that n*factorial(n)-1 is prime.

2, 3, 5, 7, 8, 11, 27, 77, 98, 183, 285, 290, 397, 410, 599, 717, 731, 888, 1962, 2239, 2241, 2532 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`a(n)=A049433(n)-1 because n!-(n-1)!-1=(n-1)*(n-1)!-1`
	CROSSREFS	`Sequence in context: A191121 A026401 A069353 * A112055 A076386 A177801` `Adjacent sequences: A090701 A090702 A090703 * A090705 A090706 A090707`
	KEYWORD	`nonn`
	AUTHOR	`Mohammed Bouayoun (bouyao(AT)wanadoo.fr), Jan 15 2004`
	EXTENSIONS	`More terms from Farideh Firoozbakht (mymontain(AT)yahoo.com), Oct 31 2004`

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Last modified February 16 03:44 EST 2012. Contains 205860 sequences.