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A250675 Number of (n+1)X(7+1) 0..3 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.

%I A250675 #6 Jul 23 2025 12:40:30
%S A250675 3321772,115965426,2996016017,61498698426,1070591197687,
%T A250675 15971487229178,210335029800118,2486539928867930,26773801460595558,
%U A250675 265593229627937954,2450139707701747024,21184357574916340526,172798870644903483178
%N A250675 Number of (n+1)X(7+1) 0..3 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.
%C A250675 Column 7 of A250676
%H A250675 R. H. Hardin, <a href="/A250675/b250675.txt">Table of n, a(n) for n = 1..27</a>
%e A250675 Some solutions for n=1
%e A250675 ..0..0..1..1..2..3..2..0....0..0..1..0..2..1..1..1....0..0..2..1..1..0..0..0
%e A250675 ..0..0..1..1..2..3..2..1....0..0..1..0..2..1..1..2....0..0..3..0..2..1..1..3
%K A250675 nonn
%O A250675 1,1
%A A250675 _R. H. Hardin_, Nov 26 2014