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A139071
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Numbers k for which (10+k!)/10 is prime.
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36
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5, 6, 11, 12, 15, 23, 26, 37, 45, 108, 112, 129, 137, 148, 172, 248
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Primes of the form (10+k!)/10 see A139070
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MATHEMATICA
| a = {}; Do[If[PrimeQ[(n! + 10)/10], AppendTo[a, n]], {n, 1, 500}]; a
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PROG
| (PARI) for(k=5, 1e3, if(ispseudoprime(k!/10+1), print1(k", "))) \\ Charles R Greathouse IV, Jul 15 2011
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CROSSREFS
| Cf. A082672, A089085, A089130, A117141, A007749, A139056, A139057, A139058, A139059, A139060, A139061, A139061, A139062, A139063, A139064, A139065, A139066, A020458, A139068, A137390, A139070, A139071, A139072.
Sequence in context: A162017 A069170 A120517 * A092296 A046608 A047264
Adjacent sequences: A139068 A139069 A139070 * A139072 A139073 A139074
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KEYWORD
| nonn
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AUTHOR
| Artur Jasinski (grafix(AT)csl.pl), Apr 07 2008
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