A231942 Number of 3Xn 0..3 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors.

64, 318, 8426, 206808, 4736026, 94464137, 1919281092, 41278336185, 897740885078, 19169895279256, 405027273733561, 8590742778707213, 183219148883189294, 3908854794384722672, 83220827197605442257, 1770396034339882044148

Offset: 1

Author

R. H. Hardin, Nov 15 2013

Keywords

• nonn

Comments

Row 3 of A231940

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210