A231659 Number of nX4 0..2 arrays with no element less than a strict majority of its horizontal, vertical and antidiagonal neighbors.

22, 458, 13434, 345519, 8300390, 206363144, 5175246459, 128866716238, 3207643017150, 79935039912485, 1991696428397289, 49618927570423938, 1236219496604319805, 30799762343804253281, 767351257510286891977

Offset: 1

Author

R. H. Hardin, Nov 12 2013

Keywords

• nonn

Comments

Column 4 of A231663

Examples

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

Links

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