A206390 Number of n X n 0..5 arrays with no element equal to another within a city block distance of two, and new values 0..5 introduced in row major order.

1, 1, 26, 1931, 170796, 21983256, 3889732730, 998388746378

Offset: 1

Author

R. H. Hardin Feb 07 2012

Keywords

• nonn

Comments

Diagonal of A206396.

Examples

			Some solutions for n=4
..0..1..2..0....0..1..2..3....0..1..2..0....0..1..2..3....0..1..2..3
..2..3..4..1....3..4..5..0....2..3..4..5....2..3..4..5....4..3..5..4
..1..5..0..2....1..0..3..1....4..5..0..1....4..5..0..1....5..2..0..1
..4..2..3..4....2..5..4..2....0..1..2..3....3..1..2..3....0..1..4..3
		

Crossrefs

Cf. A206396.