A231647 Number of nX4 0..2 arrays with no element less than a strict majority of its horizontal and vertical neighbors.

22, 341, 7682, 137961, 2412274, 42882766, 765163605, 13643499478, 243317286312, 4340128403053, 77412117578960, 1380680024126767, 24625023800964584, 439200986311182069, 7833405373009045177, 139713294059336266128

Offset: 1

Author

R. H. Hardin, Nov 12 2013

Keywords

• nonn

Comments

Column 4 of A231651

Examples

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

Links

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