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A201449 Number of nX6 0..3 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

%I A201449 #7 Jul 22 2025 16:15:40
%S A201449 6,13,701,846,22324,16334,363693,211755,3708666,1743841,27486101,
%T A201449 11523462,159251638,59366033,763865999,265448264,3148137956,
%U A201449 1014298362,11451837500,3516665645,37535616517,10943450873,112627454165,31695873391
%N A201449 Number of nX6 0..3 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.
%C A201449 Column 6 of A201451
%H A201449 R. H. Hardin, <a href="/A201449/b201449.txt">Table of n, a(n) for n = 1..42</a>
%e A201449 Some solutions for n=6
%e A201449 ..0..0..0..0..1..2....0..0..0..1..1..1....0..0..0..1..1..1....0..0..0..1..1..1
%e A201449 ..0..0..0..0..1..2....0..0..1..1..1..2....0..0..0..1..1..1....0..0..1..2..2..2
%e A201449 ..0..1..1..1..2..3....0..0..1..2..2..3....0..0..0..1..2..2....0..0..1..2..2..3
%e A201449 ..1..1..2..2..3..3....0..1..2..2..2..3....1..2..2..2..2..3....0..0..1..2..2..3
%e A201449 ..1..1..2..2..3..3....0..2..2..3..3..3....1..2..2..3..3..3....1..1..1..2..3..3
%e A201449 ..2..2..3..3..3..3....1..2..3..3..3..3....2..3..3..3..3..3....2..3..3..3..3..3
%K A201449 nonn
%O A201449 1,1
%A A201449 _R. H. Hardin_ Dec 01 2011