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 A200969 #7 Jul 22 2025 16:02:12 %S A200969 106,3636,110854,3167295,86468392,2279060645,58497330607, %T A200969 1470248361721,36345145877004,886386298107620,21376162175779039, %U A200969 510658443459103773,12100575606121151494,284720818089996296210,6658048676892055486889 %N A200969 Number of nX3 0..6 arrays with every row and column running average nondecreasing rightwards and downwards. %C A200969 Column 3 of A200974 %H A200969 R. H. Hardin, <a href="/A200969/b200969.txt">Table of n, a(n) for n = 1..27</a> %e A200969 Some solutions for n=4 %e A200969 ..0..0..3....0..0..2....0..0..4....0..0..2....0..0..1....0..0..0....0..0..1 %e A200969 ..0..3..4....0..0..4....0..3..4....0..0..3....0..0..4....0..0..4....0..0..1 %e A200969 ..0..3..6....3..6..5....0..3..6....0..4..6....0..4..4....0..5..5....0..5..5 %e A200969 ..2..4..5....6..6..6....4..6..5....0..6..6....5..5..6....3..3..4....2..3..3 %K A200969 nonn %O A200969 1,1 %A A200969 _R. H. Hardin_ Nov 25 2011