A232288 Number of n X n 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally.

1, 15, 1313, 718483, 2885285507, 84130295708483, 17291702408190208843, 25164969879062538935257597, 260198076410481338310694223844235, 19101564590400937625024602276497985649471

Offset: 1

Author

R. H. Hardin, Nov 22 2013

Keywords

• nonn

Comments

Diagonal of A232295

Examples

			Some solutions for n=3
..2..0..1....2..1..2....2..2..1....2..1..1....1..2..2....0..1..0....2..2..1
..2..2..2....2..1..0....1..0..2....1..2..2....2..2..1....2..2..1....2..1..0
..0..1..2....2..2..2....1..2..2....0..1..2....2..1..2....2..2..1....0..2..1
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..12