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A140331
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Smallest k such that 3^(3^n) - k is prime.
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0
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OFFSET
| 1,1
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COMMENTS
| This is to 3 as A058220 is to 2.
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EXAMPLE
| a(4) = 10 because 3^(3^4) - 10 = 443426488243037769948249630619149892793 is prime.
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MATHEMATICA
| lst={}; Do[Do[p=3^(3^n)-k; If[PrimeQ[p], AppendTo[lst, k]; Break[]], {k, 2, 11!}], {n, 7}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Apr 27 2010]
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CROSSREFS
| Cf. A058220.
Sequence in context: A030211 A134461 A058167 * A095896 A123670 A200032
Adjacent sequences: A140328 A140329 A140330 * A140332 A140333 A140334
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KEYWORD
| more,nonn
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AUTHOR
| Jonathan Vos Post (jvospost3(AT)gmail.com), May 26 2008
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EXTENSIONS
| a(5)-a(8) from Cino Hilliard (hillcino368(AT)hotmail.com), Jun 02 2008
a(9)-a(10) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Sep 13 2008
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