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

%I #4 Dec 04 2013 06:42:14

%S 365,83315,21452183,5614356176,1476681563849,388985760511817,

%T 102515478543489824,27021633671144767049,7122868766398379684267,

%U 1877608516657753300139888,494945420689273662809523965

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

%C Column 7 of A233098

%H R. H. Hardin, <a href="/A233097/b233097.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

%e ..0..0..1..0..1..3..1....0..1..0..0..1..0..0....0..1..1..3..2..3..1

%e ..1..0..2..3..2..3..1....1..1..0..1..1..0..1....3..1..3..3..3..3..3

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 04 2013