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A144046
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Numbers n such that |n!-107| and |n!+107| are prime.
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6
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OFFSET
| 1,1
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FORMULA
| 5!-107=13 and 5!+107=227, so 5 is a member.
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MATHEMATICA
| lst={}; a=107; Do[If[PrimeQ[n!-a]&&PrimeQ[n!+a], AppendTo[lst, n]], {n, 0, 20^2}]; lst
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PROG
| (PARI) for(n=1, 106, if(ispseudoprime(abs(n!-107))&&ispseudoprime(n!+107), print1(n", "))) \\ Charles R Greathouse IV, Oct 05 2011
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CROSSREFS
| Sequence in context: A037349 A037350 A014615 * A194276 A184336 A183300
Adjacent sequences: A144043 A144044 A144045 * A144047 A144048 A144049
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KEYWORD
| nonn,fini,full
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AUTHOR
| Vladimir Orlovsky (4vladimir(AT)gmail.com), Sep 08 2008
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