id:A108180 - OEIS Search Results

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Numbers n such that n^n * (n!/n#) + 1 is prime, where n# = primorial numbers (A034386).

+0
1

1, 2, 8, 20, 23, 55, 57, 58, 181, 741, 939 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`n!/n# is known as n compositorial. All values have been proved prime. No more terms up to 3200.`
	CROSSREFS	`Sequence in context: A030097 A136904 A043002 this_sequence A018226 A137306 A110856` `Adjacent sequences: A108177 A108178 A108179 this_sequence A108181 A108182 A108183`
	KEYWORD	`more,nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Jul 24 2005`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.