A081710 - OEIS

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A081710

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

1, 2, 3, 4, 5, 6, 8, 17, 18, 24, 95, 96, 142, 1022, 1120, 1580, 6942, 19255, 19401 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`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(2)=2 because 2!+2#+1=5 is prime`
	CROSSREFS	`Cf. A081711, A081712, A081713.` `Sequence in context: A048332 A119336 A133706 * A128421 A115885 A029964` `Adjacent sequences: A081707 A081708 A081709 * A081711 A081712 A081713`
	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 February 16 19:48 EST 2012. Contains 205955 sequences.