A329103 Numbers k such that both k^2 - 3 and 2^k - 3 are primes.
4, 10, 14, 20, 266, 452, 694
Offset: 1
Programs
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PARI
isok(k) = isprime(k^2 - 3) && isprime(2^k - 3); \\ Michel Marcus, Jul 02 2021
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.
isok(k) = isprime(k^2 - 3) && isprime(2^k - 3); \\ Michel Marcus, Jul 02 2021
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