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 A202702 #10 Oct 20 2014 17:15:13 %S A202702 0,0,0,1,1,1,3,4,5,6,47,44,40,35,29 %N A202702 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 0,0,1 respectively. %H A202702 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 A202702 Triangle begins: %e A202702 0 %e A202702 0 0 %e A202702 1 1 1 %e A202702 3 4 5 6 %e A202702 47 44 40 35 29 %e A202702 ... %Y A202702 See A202701 for further information. %K A202702 nonn,tabl,more %O A202702 1,7 %A A202702 _N. J. A. Sloane_, Dec 23 2011