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Search: id:A075896
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| A075896 |
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Primes of the form 2^n-n^2. |
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+0
5
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| 7, 79, 431, 130783, 523927, 2251799813682647, 9007199254738183, 2417851639229258349405791, 9671406556917033397642519, 664613997892457936451903530140158127
(list; graph; listen)
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OFFSET
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1,1
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MATHEMATICA
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lst={}; Do[p=2^n-n^2; If[PrimeQ[p], AppendTo[lst, p]], {n, 0, 2*5!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 27 2009]
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PROGRAM
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(PARI) for(n=2, 10^7, if(isprime(2^n-n^2), print1(2^n-n^2", ")))
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CROSSREFS
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Sequence in context: A135051 A014232 A154592 this_sequence A079911 A003545 A104094
Adjacent sequences: A075893 A075894 A075895 this_sequence A075897 A075898 A075899
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KEYWORD
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easy,nonn
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com), Oct 17 2002
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EXTENSIONS
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More terms from Ralf Stephan (ralf(AT)ark.in-berlin.de), Mar 30 2003
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