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 A108373 #5 Nov 25 2013 08:58:00 %S A108373 20,24,28,44,48,52,56,68,75,76,80,88,92,96,104,108,116,124,135,136, %T A108373 140,147,148,152,160,164,168,172,176,184,188,192,200,208,212,220,224, %U A108373 232,236,240,244,248,260,264,268,272,284,292,296,304,308,312,316,320,324 %N A108373 Numbers whose primal code characteristic = 3, that is, positive n for which A108352(n) = 3. %H A108373 J. Awbrey, <a href="https://oeis.org/wiki/Riffs_and_Rotes">Riffs and Rotes</a> %Y A108373 Cf. A108352, A108353, A108370, A108371, A108372, A108374. %K A108373 nonn %O A108373 1,1 %A A108373 _Jon Awbrey_, Jun 01 2005, extended Jun 30 2005