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A154662 Numbers n such that n!-+367 are primes. 3
6, 7, 13, 17, 20, 69 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

7!-367=4673, 7!+367=6407,...

MATHEMATICA

lst={}; a=367; Do[If[PrimeQ[n!-a]&&PrimeQ[n!+a], AppendTo[lst, n]], {n, 2*5!}]; lst

CROSSREFS

Cf. A144046, A154660, A154661

Sequence in context: A047335 A182623 A127020 * A070398 A022096 A041175

Adjacent sequences:  A154659 A154660 A154661 * A154663 A154664 A154665

KEYWORD

nonn

AUTHOR

Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 13 2009

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Last modified February 15 04:23 EST 2012. Contains 205694 sequences.