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Search: id:A062698
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| 3, 5, 13, 241, 958003201, 12804747411456001, 20666295932772289859333302675046400000001, 3102237506574764560448486032938606422126519440033972224000000000001
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,12
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MATHEMATICA
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lst={}; Do[p=2*n!+1; If[PrimeQ[p], AppendTo[lst, p]], {n, 0, 5!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 28 2009]
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PROGRAM
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(PARI) for(n=1, 55, if(isprime(2*n!+1), print(2*n!+1)))
(PARI) { n=0; f=1; for (m=1, 10^5, f*=m; if(isprime(a=2*f + 1), write("b062698.txt", n++, " ", a); if (n==12, break)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 09 2009]
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CROSSREFS
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Sequence in context: A087170 A123370 A110407 this_sequence A128341 A028942 A074378
Adjacent sequences: A062695 A062696 A062697 this_sequence A062699 A062700 A062701
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KEYWORD
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nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Jul 10 2001
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