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A100359
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Numbers n such that 2^n+n+1 is prime.
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3
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OFFSET
| 1,2
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COMMENTS
| No other terms below 51673.
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FORMULA
| a(n) = A061422(n) - 1.
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MATHEMATICA
| {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
| Cf. A001580, A069539, A052007, A048744, A100357, A100358.
Sequence in context: A110387 A158682 A201626 * A206033 A181772 A183398
Adjacent sequences: A100356 A100357 A100358 * A100360 A100361 A100362
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KEYWORD
| hard,more,nonn
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu), Nov 19 2004
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EXTENSIONS
| New term 51380 from A061422 Max Alekseyev (maxale(AT)gmail.com), Feb 08 2009
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