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.
%I A094963 #17 Jul 27 2024 20:14:08
%S A094963 5,7,19,23,87,107,255,1539,2387,4457,5623,15761,22735,27241,86447
%N A094963 Numbers k such that 2^k - 3*k is prime.
%C A094963 a(16) > 140000. - _Michael S. Branicky_, Jul 27 2024
%t A094963 Do[ If[ PrimeQ[2^n - 3n], Print[n]], {n, 1, 15000, 2}]
%o A094963 (PARI) is(k) = ispseudoprime(2^k-3*k); \\ _Jinyuan Wang_, Feb 03 2020
%Y A094963 Cf. A093988 (2^k + 3*k is prime).
%K A094963 nonn,more
%O A094963 1,1
%A A094963 _Robert G. Wilson v_, May 26 2004
%E A094963 a(12)-a(14) from _Jinyuan Wang_, Feb 03 2020
%E A094963 a(15) from _Michael S. Branicky_, May 21 2023