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Search: id:A156940
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| A156940 |
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Primes of the form 2^n + 11 |
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+0
3
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| 13, 19, 43, 139, 523, 32779, 8388619, 536870923, 2147483659, 36028797018963979, 2361183241434822606859, 151115727451828646838283
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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a(n)=2^A102633(n)+11. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 20 2009]
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MATHEMATICA
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Delete[Union[Table[If[PrimeQ[2^n + 11], 2^n + 11, 0], {n, 1, 200}]], 1]
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CROSSREFS
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Cf. A057733, A123250, A104066
Sequence in context: A106904 A106903 A098413 this_sequence A109504 A122042 A158332
Adjacent sequences: A156937 A156938 A156939 this_sequence A156941 A156942 A156943
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KEYWORD
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nonn
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AUTHOR
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Edwin Dyke (ed.dyke(AT)btinternet.com), Feb 18 2009
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