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 A172862 #14 Aug 20 2015 22:40:13 %S A172862 1,1,6,231,40176,22069251,30767936616,94161778046406, %T A172862 569304690994400256,6274236760589024662176, %U A172862 118285830126660123474844752,3623440212198461411381072575512,172850452498398420310370097345242112 %N A172862 Number of n X n 0..5 arrays with row sums 5 and column sums 5. %H A172862 R. H. Hardin, <a href="/A172862/b172862.txt">Table of n, a(n) for n = 0..35</a> %H A172862 M. L. Stein and P. R. Stein, <a href="/A001496/a001496.pdf">Enumeration of Stochastic Matrices with Integer Elements</a>, Report LA-4434, Los Alamos Scientific Laboratory of the University of California, Los Alamos, NM, Jun 1970. [Annotated scanned copy] %Y A172862 Column k=5 of A257493. %K A172862 nonn %O A172862 0,3 %A A172862 _R. H. Hardin_, Feb 06 2010