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 A200854 #7 Jul 22 2025 15:58:42 %S A200854 113,3728,103528,2604826,61846403,1408572430,31197299012,676213941385, %T A200854 14409889137860,302739147144202,6285532293756352,129206691796171679, %U A200854 2633609665501923727,53291436966934467972,1071555955172980827276 %N A200854 Number of nX4 0..4 arrays with every row and column running average nondecreasing rightwards and downwards. %C A200854 Column 4 of A200858 %H A200854 R. H. Hardin, <a href="/A200854/b200854.txt">Table of n, a(n) for n = 1..18</a> %e A200854 Some solutions for n=3 %e A200854 ..0..0..2..2....0..2..1..2....1..1..2..3....0..0..1..1....0..1..1..2 %e A200854 ..1..3..2..4....0..2..4..4....1..4..3..3....0..1..2..2....1..2..3..2 %e A200854 ..2..2..4..3....1..2..3..4....1..3..3..3....1..1..2..2....1..2..2..4 %K A200854 nonn %O A200854 1,1 %A A200854 _R. H. Hardin_ Nov 23 2011