A265193 Number of 3Xn arrays containing n copies of 0..3-1 with no equal horizontal or antidiagonal neighbors and new values introduced sequentially from 0.

1, 5, 17, 42, 155, 511, 2023, 7760, 31395, 127575, 526459, 2194344, 9206121, 38933281, 165380299, 706470350, 3028761985, 13037475319, 56289258695, 243772244956, 1058354286379, 4606025822849, 20087808189187, 87780004451864

Offset: 1

Author

R. H. Hardin, Dec 04 2015

Keywords

• nonn

Comments

Row 3 of A265192.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..129

Crossrefs

Cf. A265192.