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 A038014 #5 Jun 22 2022 12:08:22 %S A038014 3060,840,1500,300,1860,60,210,570,2040,300,240,1200,1320,160,620,420, %T A038014 660,840,100,20,1020,240,360,60,60,480,840,1560,420,1320,420,180,840, %U A038014 60,600,240,520,20,1040,100,400,1100,220,380,600,420,60 %N A038014 Differences of A038013. %Y A038014 Cf. A038013. %K A038014 nonn,base %O A038014 1,1 %A A038014 _Christian G. Bower_