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 A030796 #7 Apr 09 2020 18:28:03 %S A030796 1,8,25,32,53,81,84,99,101,116,136,186,249,283,358,392,436,485,490, %T A030796 494,536,544,546,589,593,650,704,709,717,768,835,840,843,905,919,979, %U A030796 982,984,990,1004,1064,1065,1132,1136,1214,1298,1311,1318,1389,1396,1397 %N A030796 Numbers k such that A030787(k)=4. %K A030796 nonn %O A030796 1,2 %A A030796 _Clark Kimberling_ %E A030796 More terms from _Sean A. Irvine_, Apr 09 2020