A223055 Number of n X n 0..3 arrays with all horizontally or vertically connected equal values in a straight line, and new values 0..3 introduced in row major order.

1, 10, 4865, 31331820, 2266567594841, 1837966217755803448, 16700483735732492103987445, 1700203937054371815103811136350852

Offset: 1

Author

R. H. Hardin Mar 13 2013

Keywords

• nonn

Comments

Diagonal of A223062

Examples

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