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A139058
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Numbers n such that (5+n!)/5 is prime.
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44
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7, 9, 11, 14, 19, 23, 45, 121, 131, 194, 735, 751
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| For primes of the form (5+n!)/5 see A139059.
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MATHEMATICA
| a = {}; Do[If[PrimeQ[(n! + 5)/5], AppendTo[a, n]], {n, 1, 751}]; a
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PROG
| (MAGMA) [ n: n in [5..734] | IsPrime((Factorial(n)+5) div 5) ];
(PARI) A139058(n) = local(k=(n!+5)\5); if(isprime(k), k, 0);
for(n=5, 800, if(A139058(n)>0, print1(n, ", ")))
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CROSSREFS
| Cf. A139059.
Sequence in context: A029612 A120165 A024828 * A107226 A029611 A053357
Adjacent sequences: A139055 A139056 A139057 * A139059 A139060 A139061
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KEYWORD
| nonn
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AUTHOR
| Artur Jasinski (grafix(AT)csl.pl), Apr 07 2008
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