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 A048972 #9 Mar 31 2012 10:32:38 %S A048972 1,2,5,6,7,9,10,11,12,13,14,15,16 %N A048972 Length of record run mentioned in A048971. %e A048972 54, 55, 56, 57, 58 is a run of length 5 in A001221 all with d = 2. %Y A048972 Cf. A001221, A048971, A048932. %K A048972 more,nonn %O A048972 1,2 %A A048972 _N. J. A. Sloane_, _Enoch Haga_ %E A048972 More terms from Sam Handler (sam_5_5_5_0(AT)yahoo.com), Sep 04 2006