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 A306219 #15 Jan 31 2019 08:27:31 %S A306219 1,4,8,16,24,32,40,48,64,80,96,112,128,144,160,208,215,256,272,280, %T A306219 311,320,335,395,400,430,455,527,535,575,635,640,670,695,755,775,815, %U A306219 895,935,1055,1175,1355,1375,1415,1475,1495,1535,1615,1655,1735,1775,1895 %N A306219 Records in A096004. %Y A306219 Cf. A096004. %K A306219 nonn %O A306219 1,2 %A A306219 _Peter Kagey_, Jan 30 2019