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 A118523 #12 Jan 15 2018 14:13:50 %S A118523 1,3,6,14,19,21,22,23,26,27,32,33,35,37,38,39,40,41,44,45,48,49,50,51, %T A118523 53,55,56,57,58,59,62,63,66,67,68,69,71,73,74,75,76,77,80,81,84,85,86, %U A118523 87,89,91,92,93,94,95,98 %N A118523 Records in A118522. %H A118523 N. J. A. Sloane and others, <a href="/wiki/Sequences_of_RADD_type">Sequences of RADD type</a>, OEIS wiki. %K A118523 nonn,more %O A118523 1,2 %A A118523 _N. J. A. Sloane_, May 06 2006 %E A118523 a(9)-a(39) from _Klaus Brockhaus_, Jul 29 2006 %E A118523 a(40)-a(55) from _Lars Blomberg_, Jan 15 2018