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 A229164 #19 Apr 15 2016 14:33:44 %S A229164 0,0,0,0,1,1,8,1112,287311 %N A229164 Number of n X n binary matrices with exactly 5 ones in each row and column, and with rows and columns in lexicographically nondecreasing order. %D A229164 K. Yordzhev, On an Algorithm for Isomorphism-Free Generations of Combinatorial Objects, International Journal of Emerging Trends & Technology in Computer Science (IJETTCS), Web Site: www.ijettcs.org, Volume 2, Issue 6, November - December 2013, ISSN 2278-6856 %H A229164 K. Yordzhev, <a href="http://arXiv.org/abs/1305.6790">Fibonacci sequence related to a combinatorial problem on binary matrices</a>, arXiv preprint arXiv:1305.6790, 2013 %H A229164 K. Yordzhev, <a href="http://arxiv.org/abs/1506.04642">Semi-canonical binary matrices</a>, arXiv preprint arXiv:1506.04642, 2015 %Y A229164 Cf. A229161-A229163, A000516. %Y A229164 A column of A227061. %K A229164 nonn,more %O A229164 1,7 %A A229164 _N. J. A. Sloane_, Sep 15 2013