%I #5 Mar 31 2012 12:37:04
%S 2470216,888172440,139786868632,42501311863619,8486771114466915,
%T 2391551925319245318,566608180773299047113,155382071318023786051201,
%U 40101253859407159274129669,10933319692657383714277445869
%N Number of (n+1)X7 0..3 arrays with the determinants of 2X2 subblocks nondecreasing rightwards and downwards
%C Column 6 of A205027
%H R. H. Hardin, <a href="/A205025/b205025.txt">Table of n, a(n) for n = 1..104</a>
%e Some solutions for n=4
%e ..0..1..1..1..1..3..0....1..0..0..0..0..3..1....0..3..1..1..1..3..0
%e ..0..0..0..0..0..0..0....2..0..1..3..0..2..1....0..3..1..1..1..3..1
%e ..0..2..1..2..0..2..3....0..0..0..0..0..2..2....0..3..1..1..1..3..2
%e ..0..0..0..0..0..2..3....2..0..3..0..0..1..2....0..3..1..1..1..3..3
%e ..2..3..2..3..0..2..3....1..0..1..0..0..0..2....0..0..0..0..0..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 21 2012