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Search: id:A060425
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| A060425 |
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Primes of form n*4^n-1. |
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+0
1
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| 3, 31, 191, 5119, 524287, 3758096383, 1618481116086271, 5359447279004780799548150067050349330431, 2817103802133904744169307240538184064530443801964688726052818649087
(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=n*4^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) { n=0; for (m=1, 530, if (isprime(a=m*4^m - 1), write("b060425.txt", n++, " ", a)); ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 04 2009]
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CROSSREFS
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Adjacent sequences: A060422 A060423 A060424 this_sequence A060426 A060427 A060428
Sequence in context: A125085 A007233 A060416 this_sequence A121099 A121147 A114654
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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), Apr 05 2001
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EXTENSIONS
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More terms from Reiner Martin (reinermartin(AT)hotmail.com), Jul 20 2001
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