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 A256157 #9 Apr 07 2017 13:00:32 %S A256157 1,3,10,40,228,2380,94495,320863387 %N A256157 Number of 2-polymatroids on n unlabeled points. %H A256157 Jayant Apte, JM Walsh, <a href="http://arxiv.org/abs/1605.04598">Constrained Linear Representability of Polymatroids and Algorithms for Computing Achievability Proofs in Network Coding</a>, arXiv preprint arXiv:1605.04598, 2016 %H A256157 Thomas J. Savitsky, <a href="http://epubs.siam.org/doi/abs/10.1137/140955094">Enumeration of 2-polymatroids on up to seven elements</a>. SIAM J. Discrete Math., 28(4):1641-1650, 2014. <a href="http://arxiv.org/abs/1401.8006">arXiv:1401.8006</a> %Y A256157 Row sums of A256156. %Y A256157 Cf. A256158, A256159, A055545 %K A256157 nonn,more %O A256157 0,2 %A A256157 _Max Alekseyev_, Mar 16 2015