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Search: id:A108270
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| A108270 |
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Numbers n such that n*n! + (smallest prime >= n) is prime. |
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+0
2
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OFFSET
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1,2
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COMMENT
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Note that Maple, Pari etc. have different notions of what "next prime" means!
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FORMULA
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A096986 INTERSECT A018252. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 13 2007
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PROGRAM
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(PARI) for(x=1, 1000, if(isprime(x*x!+nextprime(x)), print1(x, ", ")))
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CROSSREFS
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Cf. A096986.
Adjacent sequences: A108267 A108268 A108269 this_sequence A108271 A108272 A108273
Sequence in context: A059889 A058011 A089330 this_sequence A019161 A137026 A028987
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KEYWORD
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nonn,more
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AUTHOR
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Jorge Coveiro (jorgecoveiro(AT)yahoo.com), Jul 24 2006
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