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 A202696 #14 Oct 20 2014 17:15:13 %S A202696 0,1,1,4,3,2,14,18,21,23,176,162,144,123,100 %N A202696 The second 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 A202696 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 A202696 Triangle begins: %e A202696 0 %e A202696 1 1 %e A202696 4 3 2 %e A202696 14 18 21 23 %e A202696 176 162 144 123 100 %e A202696 ... %Y A202696 See A202695 for further information. %K A202696 nonn,tabl,more %O A202696 1,4 %A A202696 _N. J. A. Sloane_, Dec 23 2011