A233233 Number of n X n 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.
1, 19, 18744, 338046654, 83262848013541, 273407904115337411320, 11963921132630138069523033663, 6976482888479442637729140675454130898
Offset: 1
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Examples
Some solutions for n=3 ..0..1..1....0..1..2....0..1..2....0..0..1....0..1..5....0..1..2....0..1..1 ..2..0..1....2..1..1....2..0..2....4..0..4....2..1..0....0..1..1....1..0..0 ..3..0..4....1..5..1....1..1..1....4..2..4....0..2..2....2..0..0....0..1..2
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