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A201448 Number of nX5 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 A201448 #7 Jul 22 2025 16:15:33
%S A201448 4,56,246,261,4544,22324,45532,32314,313710,1126721,1675002,879801,
%T A201448 7177332,20808117,25958138,11930250,83429402,215418299,242046848,
%U A201448 99077372,640294388,1516885224,1571234990,603846146,3627055278
%N A201448 Number of nX5 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 A201448 Column 5 of A201451
%H A201448 R. H. Hardin, <a href="/A201448/b201448.txt">Table of n, a(n) for n = 1..57</a>
%e A201448 Some solutions for n=8
%e A201448 ..0..0..0..1..2....0..0..0..1..2....0..0..0..0..1....0..0..0..0..2
%e A201448 ..0..1..1..1..2....0..0..1..1..2....0..0..1..1..2....0..0..0..2..2
%e A201448 ..0..1..1..1..3....0..0..1..1..2....0..1..1..1..2....0..1..1..2..3
%e A201448 ..0..1..2..2..3....0..0..1..1..2....0..1..1..1..2....0..1..1..2..3
%e A201448 ..0..1..2..2..3....0..1..1..1..2....0..1..2..2..2....0..1..1..3..3
%e A201448 ..0..1..2..3..3....2..2..2..3..3....0..2..2..3..3....1..1..2..3..3
%e A201448 ..0..2..2..3..3....2..3..3..3..3....2..3..3..3..3....1..1..2..3..3
%e A201448 ..0..2..3..3..3....2..3..3..3..3....2..3..3..3..3....2..2..2..3..3
%K A201448 nonn
%O A201448 1,1
%A A201448 _R. H. Hardin_ Dec 01 2011