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Number of nX7 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 in row major order
1

%I #4 Dec 03 2013 20:47:22

%S 365,57122,11235652,2293174089,475027244071,98950914937033,

%T 20656955820980290,4315955749032401626,902039316691285768305,

%U 188549438666892024287013,39413397925167802927174270

%N Number of nX7 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 in row major order

%C Column 7 of A233073

%H R. H. Hardin, <a href="/A233072/b233072.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

%e ..0..1..0..1..1..1..0....0..0..1..1..0..1..1....0..0..1..0..1..0..0

%e ..0..1..0..0..1..0..0....1..1..0..1..0..0..0....0..1..1..0..1..0..1

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 03 2013