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 A338370 #20 Apr 08 2021 07:18:18
%S A338370 6,8,12,16,18,20,24,36,40,42,48,54,60,64,72,80,84,96,100,108,120,126,
%T A338370 128,136,144,156,160,162,168,180,192,200,216,220,240,252,256,272,288,
%U A338370 294,300,312,320,324,336,342,360,378,384,400,408,420,432,440,468,480,486
%N A338370 Numbers k such that 4^k - 2^k + 1 is a strong pseudoprime to base 2 (A001262).
%C A338370 Apparently this sequence is A068563 \ {1, 2, 4, 32}. - _Amiram Eldar_, Oct 23 2020
%Y A338370 Cf. A001262, A068563.
%K A338370 nonn
%O A338370 1,1
%A A338370 _Davide Rotondo_, Oct 23 2020