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 A172536 #6 Apr 11 2017 16:02:23 %S A172536 0,0,0,0,0,0,0,1,362880,1371785398200,7673688777463632000, %T A172536 65599839591251908982712750,885282776210120715086715619724160, %U A172536 19040419266278799766631032461849139013040 %N A172536 Number of n X n 0..1 arrays with row sums 8 and column sums 8. %H A172536 R. H. Hardin, <a href="/A172536/b172536.txt">Table of n, a(n) for n=1..22</a> %Y A172536 Column k=8 of A008300. %K A172536 nonn %O A172536 1,9 %A A172536 _R. H. Hardin_, Feb 06 2010