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A232954 Number of nX7 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, diagonally or antidiagonally, and top left element zero.

%I A232954 #6 Jul 23 2025 07:45:51
%S A232954 729,166629,42904365,11228712351,2953363127697,777971521023633,
%T A232954 205030957086979647,54043267342289534097,14245737532796759368533,
%U A232954 3755217033315506600279775,989890841378547325619047929
%N A232954 Number of nX7 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, diagonally or antidiagonally, and top left element zero.
%C A232954 Column 7 of A232955
%H A232954 R. H. Hardin, <a href="/A232954/b232954.txt">Table of n, a(n) for n = 1..210</a>
%e A232954 Some solutions for n=2
%e A232954 ..0..2..0..2..3..2..2....0..2..0..1..1..3..3....0..0..1..3..2..3..2
%e A232954 ..2..0..0..1..0..2..3....3..2..0..0..1..3..1....0..1..1..3..2..2..2
%K A232954 nonn
%O A232954 1,1
%A A232954 _R. H. Hardin_, Dec 02 2013