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A108270
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Numbers n such that n*n! + (smallest prime >= n) is prime.
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1
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1, 4, 6, 8, 30, 40, 164, 176, 189, 218, 370, 597, 603, 1473, 2176, 2436, 2548, 2732, 4758, 5574
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Note that Maple, PARI etc. have different notions of what "next prime" means!
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FORMULA
| A096986 INTERSECT A018252. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 13 2007
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PROG
| (PARI) for(x=1, 1000, if(isprime(x*x!+nextprime(x)), print1(x, ", ")))
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CROSSREFS
| Cf. A096986.
Sequence in context: A059889 A058011 A089330 * A019161 A137026 A090938
Adjacent sequences: A108267 A108268 A108269 * A108271 A108272 A108273
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KEYWORD
| nonn,more
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AUTHOR
| Jorge Coveiro (jorgecoveiro(AT)yahoo.com), Jul 24 2006
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EXTENSIONS
| a(11)-a(20) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Dec 13 2008
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