id:A081712 - OEIS Search Results

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n! - n# + 1 is prime, where n# is the primorial function.

+0
2

4, 6, 7, 8, 10, 20, 21, 26, 101, 119, 172, 409, 621, 1043, 1204, 1283, 1673, 2003, 4336, 5773, 12913, 13517 (list; graph; listen)

	OFFSET	`0,1`
	COMMENT	`Some of the larger entries may only correspond to probable primes.`
	LINKS	`Mike Oakes, Primo-factorials` `Joe McLean, Interesting Sources of Probable Primes`
	EXAMPLE	`a(1)=4 because 4!-4#+1=19 is prime`
	CROSSREFS	`Sequence in context: A105432 A139490 A030375 this_sequence A084395 A047291 A100349` `Adjacent sequences: A081709 A081710 A081711 this_sequence A081713 A081714 A081715`
	KEYWORD	`nonn`
	AUTHOR	`Mike Oakes (mikeoakes2(AT)aol.com), Apr 04 2003`
	EXTENSIONS	`More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 03 2008`

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Last modified March 15 12:29 EDT 2010. Contains 173428 sequences.