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 A038634 #9 Mar 16 2020 23:20:06 %S A038634 11,32,385,1612,2159,2224,2379,2454,3163,3280,3739,4134,4406,7137, %T A038634 14077,15516,17662,17916,20720,21891,23595,25886,26229,26470,31855, %U A038634 37800,37803,38753,39406,42508,44336,44498,46326,47684,47881,48444,51336,54022,54644,54711 %N A038634 Numbers k such that k-th and (k+1)-st term of A038593 differ by 3. %Y A038634 Cf. A038645, A038646. %K A038634 nonn %O A038634 1,1 %A A038634 _Jeff Burch_ %E A038634 More terms from and one term corrected by _Jinyuan Wang_, Mar 16 2020