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Search: id:A100359
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| A100359 |
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Numbers n such that 2^n+n+1 is prime. |
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+0
4
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OFFSET
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1,2
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COMMENT
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No other terms below 51673.
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MATHEMATICA
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{ta={{0}}, tb={{0}}}; Do[g=n; s=2^n+n+1; If[PrimeQ[s], Print[n]; ta=Append[ta, n]; tb=Append[tb, s]], {n, 1, 10000}]; {ta, tb, g}
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CROSSREFS
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Cf. A001580, A069539, A052007, A048744, A100357, A100358.
Equals A061422(n) - 1.
Sequence in context: A013083 A110387 A158682 this_sequence A052342 A007190 A164829
Adjacent sequences: A100356 A100357 A100358 this_sequence A100360 A100361 A100362
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KEYWORD
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hard,more,nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Nov 19 2004
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EXTENSIONS
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New term 51380 from A061422 Max Alekseyev (maxale(AT)gmail.com), Feb 08 2009
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