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 A118473 #8 May 26 2014 23:48:48 %S A118473 1,40,43,47,50,53,2636,2639,2640,2643,2644,2730,2739,3008,251505, %T A118473 251995,252485,252975,253465,253506,253510,253513,253514,253515, %U A118473 253516,253517,253520,253521,253522,255008,25037505,25087495,25137485,25187475 %N A118473 Records in A117831. %H A118473 Klaus Brockhaus, <a href="/A118473/b118473.txt">Table of n, a(n) for n = 1,...,45</a> %H A118473 N. J. A. Sloane and others, <a href="/wiki/Sequences_of_RADD_type">Sequences of RADD type</a>, OEIS wiki. %Y A118473 Cf. A117831, A118474. %K A118473 nonn,base %O A118473 1,2 %A A118473 _N. J. A. Sloane_, May 05 2006 %E A118473 a(8)-a(13) from _N. J. A. Sloane_, May 06 2006 %E A118473 a(14)-a(20) from _Klaus Brockhaus_, May 07 2006 %E A118473 a(21)-a(34) from _Klaus Brockhaus_, Aug 01 2006