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 A208128 #12 Apr 03 2012 15:05:37 %S A208128 36,68,99,132,163,195,226,260,291,323,354,387,418,450,481,516,520,547, %T A208128 579,610,643,674,706,737,771,802,834,865,898,929,961,992,1028,1032, %U A208128 1059,1091,1122,1155,1186,1218,1249,1283,1314,1346,1377,1410,1441,1473,1504,1539,1543,1570 %N A208128 Numbers n for which A210255(n)=3. %Y A208128 Cf. A210255. %K A208128 nonn %O A208128 1,1 %A A208128 _Vladimir Shevelev_, Mar 29 2012