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 A038649 #6 Mar 16 2020 09:57:23 %S A038649 56,1946,10712,66152,97211,408746,548192,657083,681347,775712,857306, %T A038649 1199549,1259561,1536383,2116928,2247266,2310077,2406035,2758232, %U A038649 6547808,8596856,9525728,12462779,13952549,23289833,23351456,24290786,26010236,34502771,36514856,36841799 %N A038649 Gaps of 5 in sequence A038593 (lower terms). %Y A038649 Cf. A038650. %K A038649 nonn %O A038649 1,1 %A A038649 _Jeff Burch_ %E A038649 Offset changed to 1 by and more terms from _Jinyuan Wang_, Mar 16 2020