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 A202697 #12 Oct 20 2014 17:15:13 %S A202697 0,1,1,2,1,0,23,25,26,26,100,77,52,26,0 %N A202697 The third of a set of three triangles constructed by the same rule as A202692-A202694, but where the top entries in the three triangles are 1,0,0 respectively. %H A202697 M. Josuat-Verges, J.-C. Novelli and J.-Y. Thibon, <a href="http://arxiv.org/abs/1110.5272">The algebraic combinatorics of snakes</a>, arXiv preprint arXiv:1110.5272, 2011 %e A202697 Triangle begins: %e A202697 0 %e A202697 1 1 %e A202697 2 1 0 %e A202697 23 25 26 26 %e A202697 100 77 52 26 0 %e A202697 ... %Y A202697 See A202695 for further information. %K A202697 nonn,tabl,more %O A202697 1,4 %A A202697 _N. J. A. Sloane_, Dec 23 2011