A233105 Number of n X n 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.
1, 19, 24912, 794723482, 457873555330159, 4655818309443587944819, 835153023014356911992288011287, 2642740111638617064845250032401005032917, 147523503812676026261878057522783598121057848912309
Offset: 1
Keywords
Examples
Some solutions for n=3 ..0..1..5....0..1..0....0..1..2....0..1..2....0..1..5....0..0..0....0..1..0 ..4..2..4....1..5..4....4..3..1....2..1..2....2..1..1....0..1..1....4..2..2 ..0..2..4....0..4..4....5..1..1....4..3..4....2..2..1....0..0..2....2..5..4
Comments