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 A268530 #3 Feb 17 2016 14:47:58 %S A268530 1,2,4,5,12,13,36,41,42,91,137,168,170,219,224,226,280,388,393,424, %T A268530 442,452,454,464,549,836,838,936,1073,1652,2797,2913,3528,3807,3809, %U A268530 3811,4550,5209,5413,5849,5851 %N A268530 Positions of records in A268642. %Y A268530 Cf. A268642, A268529. %K A268530 nonn %O A268530 1,2 %A A268530 _N. J. A. Sloane_, Feb 17 2016