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 A264615 #10 Feb 13 2018 00:37:39 %S A264615 1,1,1,1,7,1,22,25,1,50,333,1,95,1851,1893,1,161,6839,39079,1,252, %T A264615 19782,323580,301505,1,372,48510,1706180,8566857,1,525,105546,6792650, %U A264615 95942613,82953225,1,715,209682,22248446,668057885,3025374471,1,946,387783,63055388,3435912383,43154349714,35095900185 %N A264615 Irregular triangle read by rows: T(n,k) = number of signed unichromosonal genomes with n genes at 3-break distance k from a fixed genome, 0 <= k <= floor(n/2). %H A264615 N. Alexeev, A. Pologova, M. A. Alekseyev, Generalized Hultman Numbers and Cycle Structures of Breakpoint Graphs, Journal of Computational Biology 24:2 (2017), 93-105. doi:<a href="http://doi.org/10.1089/cmb.2016.0190">10.1089/cmb.2016.0190</a> arXiv:<a href="http://arxiv.org/abs/1503.05285">1503.05285</a> %e A264615 Triangle begins: %e A264615 1, %e A264615 1,1, %e A264615 1,7, %e A264615 1,22,25, %e A264615 1,50,333, %e A264615 1,95,1851,1893, %e A264615 1,161,6839,39079, %e A264615 1,252,19782,323580,301505, %e A264615 1,372,48510,1706180,8566857, %e A264615 ... %Y A264615 Cf. A164652, A189507, A264614, A264616, A264617. %K A264615 nonn,tabf %O A264615 1,5 %A A264615 _N. J. A. Sloane_, Nov 28 2015 %E A264615 Extended and offset corrected by _Max Alekseyev_, Feb 13 2018