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 A268248 #5 Jan 29 2016 07:36:06 %S A268248 570,324900,185193000,98956027822,50740994294843,25094770808231271, %T A268248 12036028524394985335,5621452214452374028388, %U A268248 2565187035327423790344235,1146743647158206462853356328,503335984976361363075982965598 %N A268248 Number of nX4 0..4 arrays with every repeated value in every row greater than, and every column greater than or equal to, the previous repeated value. %C A268248 Column 4 of A268249. %H A268248 R. H. Hardin, <a href="/A268248/b268248.txt">Table of n, a(n) for n = 1..17</a> %e A268248 Some solutions for n=1 %e A268248 ..0..4..0..4....1..0..1..3....2..3..0..0....4..1..0..3....2..3..3..4 %Y A268248 Cf. A268249. %K A268248 nonn %O A268248 1,1 %A A268248 _R. H. Hardin_, Jan 29 2016