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Search: id:A139065
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| A139065 |
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a(n) = numbers k for which (7+k!)/7 is prime. |
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+0
43
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| 11, 15, 16, 25, 35, 59, 64, 68, 82, 121, 149, 238
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Primes of the form (7+k!)/7 see A139064
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MATHEMATICA
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a = {}; Do[If[PrimeQ[(n! + 7)/7], AppendTo[a, n]], {n, 1, 500}]; a
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CROSSREFS
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Cf. A082672, A089085, A089130, A117141, A007749, A139056, A139057, A139058, A139059, A139060, A139061, A139061, A139062, A139063, A139064, A139065, A139066, A020458.
Adjacent sequences: A139062 A139063 A139064 this_sequence A139066 A139067 A139068
Sequence in context: A101840 A061087 A063964 this_sequence A111322 A069822 A116999
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KEYWORD
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nonn
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AUTHOR
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Artur Jasinski (grafix(AT)csl.pl), Apr 07 2008
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