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 A259972 #13 Jan 08 2021 07:44:26 %S A259972 1,2,1,5,7,3,20,58,60,21,179,838,1458,1113,315,4082,25171,60780,72135, %T A259972 42210,9765,218225,1610977,4871193,7745115,6844635,3193155,615195 %N A259972 Triangle read by rows: coefficients psi(n,k) arising from the study of completely transitive graphs on n nodes. %H A259972 E. Andresen, K. Kjeldsen, <a href="http://dx.doi.org/10.1016/0012-365X(76)90054-6">On certain subgraphs of a complete transitively directed graph</a>, Discrete Math. 14 (1976), no. 2, 103-119. %H A259972 Hsien-Kuei Hwang, Emma Yu Jin, Michael J. Schlosser, <a href="https://arxiv.org/abs/2012.13570">Asymptotics and statistics on Fishburn Matrices: dimension distribution and a conjecture of Stoimenow</a>, arXiv:2012.13570 [math.CO], Dec 25 2020, p. 29. %e A259972 Triangle begins: %e A259972 1, %e A259972 2,1, %e A259972 5,7,3, %e A259972 20,58,60,21, %e A259972 179,838,1458,1113,315, %e A259972 4082,25171,60780,72135,42210,9765, %e A259972 218225,1610977,4871193,7745115,6844635,3193155,615195, %e A259972 ... %Y A259972 Cf. A259971, A259970. %Y A259972 Diagonals include A005331, A005332. %Y A259972 Row sums are A005016. %K A259972 nonn,more,tabl %O A259972 1,2 %A A259972 _N. J. A. Sloane_, Jul 11 2015