A062593 Numbers k such that 27^k - 26^k is prime.
2, 13, 157, 43117
Offset: 1
Programs
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PARI
is(n)=ispseudoprime(27^n-26^n) \\ Charles R Greathouse IV, Jun 12 2017
Extensions
a(4) from Robert Price, Aug 12 2012
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(27^n-26^n) \\ Charles R Greathouse IV, Jun 12 2017
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