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 A256404 #12 Apr 08 2015 11:33:42 %S A256404 1,2,3,5,9,13,17,22,25,70,82,158,174,184,194,261,293,331,616,745,983, %T A256404 1076,1672,2177,2821,3599,6591,7804,10174,11629,13141,13397,15589, %U A256404 17767,18814,19859,21112,21247,23242,24785,34351,36447,40122,45630 %N A256404 Positions of records in A166133. %H A256404 John Mason, <a href="/A256404/b256404.txt">Table of n, a(n) for n = 1..142</a> %Y A256404 Cf. A166133, A256403. %K A256404 nonn %O A256404 1,2 %A A256404 _N. J. A. Sloane_, Apr 01 2015