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 A127580 #5 May 25 2024 21:25:40
%S A127580 1,2,5,16,17,19,22,25,32,34,41,44,52,55,61,64,74,79,85,94,95,97,104,
%T A127580 107,109,110,116,127,131,137,142,145,152,157,160,164,166,172,179,184,
%U A127580 185,194,197,199
%N A127580 Numbers k such that 64k+63 is prime.
%t A127580 a = {}; Do[If[PrimeQ[64n + 63], AppendTo[a, n]], {n, 1, 200}]; a
%Y A127580 Cf. A127575, A127576, A127577, A127578, A127580, A127581.
%K A127580 nonn
%O A127580 1,2
%A A127580 _Artur Jasinski_, Jan 19 2007