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Search: id:A076196
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| A076196 |
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Numbers n such n!!+2^9 is prime. |
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+0
10
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| 7, 13, 15, 19, 25, 133, 135, 199, 223, 297, 299, 511
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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The OpenPFGW Project, Primality Tester
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MATHEMATICA
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lst={}; Do[If[PrimeQ[n!!+2^9], (*Print[n]; *)AppendTo[lst, n]], {n, 6!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Aug 26 2008]
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CROSSREFS
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Cf. A006882, A080778 and A076185, A076186, A076188, A076189, A076190,
A076193, A076194, A076195, A076197 for other values of s in n!!+2^s
Sequence in context: A104217 A135054 A076701 this_sequence A167782 A053696 A090503
Adjacent sequences: A076193 A076194 A076195 this_sequence A076197 A076198 A076199
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KEYWORD
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nonn,more
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com), Nov 02 2002
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EXTENSIONS
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Edited and extended (n<4096) by Hugo Pfoertner (hugo(AT)pfoertner.org), Jun 19 2003
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