A233140 Number of n X n 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.
1, 16, 13259, 198313130, 39758352524643, 104628720219120084935, 3612824935976380302597462081, 1636876887880533270191858718052988313
Offset: 1
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Examples
Some solutions for n=3 ..0..0..1....0..1..2....0..1..2....0..0..1....0..1..2....0..1..5....0..1..5 ..4..0..1....3..0..4....2..0..1....4..2..0....1..5..4....1..5..2....2..2..4 ..2..1..1....0..4..0....1..0..0....0..4..4....5..5..3....5..1..5....5..4..5
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