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 A238092 #7 Mar 05 2020 02:59:54 %S A238092 3,5,13,19,32,38,55,57,59,95,97,104,157,244,249,254,256,258,276,419, %T A238092 609,787,789,791,1069,1664,1666,1668,1670 %N A238092 A bisection of A136259. %F A238092 a(n) = A136259(2*n). - _Jinyuan Wang_, Mar 04 2020 %Y A238092 Cf. A136259, A238091. %K A238092 nonn,more %O A238092 1,1 %A A238092 _N. J. A. Sloane_, Feb 20 2014