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 A268529 #3 Feb 17 2016 14:46:21 %S A268529 1,3,6,18,36,108,159,180,540,648,1026,1077,1617,1818,2049,3075,3888, %T A268529 6156,6930,7128,7668,9717,14577,18465,23328,23757,35637,42120,42768, %U A268529 46329,56373,70956,85212,97197,145797,218697,276048,314925,367413,672624,1008936 %N A268529 Records in A268642. %Y A268529 Cf. A268642, A268530. %K A268529 nonn %O A268529 1,2 %A A268529 _N. J. A. Sloane_, Feb 17 2016