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A201450 Number of n X 7 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 A201450 #9 Feb 19 2024 03:17:19
%S A201450 4,110,844,1720,45532,363693,1129682,1136762,16354832,80822317,
%T A201450 164740812,118019739,1269643884,4872612379,7910355612,4617454222,
%U A201450 41308142036,133824389250,186755344178,94854691897,750329582592,2169912953058
%N A201450 Number of n X 7 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.
%H A201450 R. H. Hardin, <a href="/A201450/b201450.txt">Table of n, a(n) for n = 1..32</a>
%e A201450 Some solutions for n=5:
%e A201450 ..0..0..0..0..1..1..1....0..0..0..1..1..1..2....0..0..0..0..0..1..2
%e A201450 ..0..0..1..1..1..1..3....0..0..1..1..1..1..3....0..0..1..1..1..2..2
%e A201450 ..0..0..1..1..2..2..3....0..1..1..2..2..2..3....0..1..1..1..2..2..3
%e A201450 ..0..2..2..2..3..3..3....0..2..2..2..2..2..3....0..1..1..2..2..2..3
%e A201450 ..2..2..2..2..3..3..3....0..3..3..3..3..3..3....3..3..3..3..3..3..3
%Y A201450 Column 7 of A201451.
%K A201450 nonn
%O A201450 1,1
%A A201450 _R. H. Hardin_, Dec 01 2011