A265242 Number of 3Xn arrays containing n copies of 0..3-1 with no equal antidiagonal neighbors and new values introduced sequentially from 0.

1, 10, 92, 888, 8880, 91180, 955320, 10168092, 109595168, 1193414004, 13106207640, 144965453160, 1613228920704, 18047090084256, 202816635014976, 2288462757997500, 25913609592575040, 294366270662992612

Offset: 1

Author

R. H. Hardin, Dec 06 2015

Keywords

• nonn

Comments

Row 3 of A265241.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..109

Crossrefs

Cf. A265241.