A143252 Numbers n such that 2*41^n + 1 is prime.
0, 1, 819, 1449, 1677, 13319
Offset: 1
Crossrefs
Cf. A141802.
Programs
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PARI
is(n)=ispseudoprime(2*41^n+1) \\ Charles R Greathouse IV, Jun 13 2017
This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
is(n)=ispseudoprime(2*41^n+1) \\ Charles R Greathouse IV, Jun 13 2017
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