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 A338068 #10 Jan 26 2021 03:38:49 %S A338068 31,35,39,63,67,71,75,79,83,87,91,95,99,119,123,146,158,187,198,215, %T A338068 218,223,227,231,234,239,255,279,283,307,311,315,331,335,339,343,346, %U A338068 347,351,354,355,359,363,367,370,371,375,378,379,383,387,390,391,395,402,403,407,411,415,418 %N A338068 Numbers k such that A336957(k) is even and less than k. %H A338068 N. J. A. Sloane, <a href="/A338068/b338068.txt">Table of n, a(n) for n = 1..20000</a> %Y A338068 Cf. A336957, A338062-A338069. %K A338068 nonn %O A338068 1,1 %A A338068 _N. J. A. Sloane_, Oct 19 2020