id:A085146 - OEIS Search Results

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Numbers n such that n!!!!+1 is prime.

+0
3

0, 1, 2, 4, 6, 18, 38, 56, 94, 118, 148, 286, 1358, 1480, 1514, 2680, 2846, 4078, 4288, 5612, 5680, 6440, 6586, 14614, 30972, 31690, 54406 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`The search for multifactorial primes started by Ray Ballinger is now continued by a team of volunteers on the website of Ken Davis (see link).`
	LINKS	`Ken Davis, Status of Search for Multifactorial Primes.` `Ken Davis, Results for n!4+1.`
	CROSSREFS	`Cf. A007662 (quadruple factorials), A085147.` `Sequence in context: A088174 A052930 A098853 this_sequence A066894 A111115 A005227` `Adjacent sequences: A085143 A085144 A085145 this_sequence A085147 A085148 A085149`
	KEYWORD	`hard,nonn`
	AUTHOR	`Hugo Pfoertner (hugo(AT)pfoertner.org), Jun 25 2003`
	EXTENSIONS	`More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 03 2008`

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.

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