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A233245 Number of 7Xn 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.

%I A233245 #6 Jul 23 2025 07:58:34
%S A233245 6896,53692063,633724470764,7415057313896849,86961450397919224924,
%T A233245 1019972250198681748495759,11963921132630138069523033663,
%U A233245 140334092336070663237513533114112,1646091578322294419786739964245190052
%N A233245 Number of 7Xn 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.
%C A233245 Row 7 of A233239
%H A233245 R. H. Hardin, <a href="/A233245/b233245.txt">Table of n, a(n) for n = 1..21</a>
%e A233245 Some solutions for n=2
%e A233245 ..0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0
%e A233245 ..0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0
%e A233245 ..0..1....0..1....0..0....0..1....0..1....0..0....0..0....0..1....0..1....0..1
%e A233245 ..2..0....0..0....1..1....2..1....1..0....0..1....0..1....1..2....0..4....2..0
%e A233245 ..4..0....1..2....5..5....0..4....2..2....2..4....2..4....1..0....2..4....0..1
%e A233245 ..2..5....5..2....5..1....4..4....0..1....0..0....0..4....4..5....0..0....3..4
%e A233245 ..1..1....4..3....2..1....2..2....2..2....3..1....4..2....2..2....3..4....3..1
%K A233245 nonn
%O A233245 1,1
%A A233245 _R. H. Hardin_, Dec 06 2013