A231582 Number of nX3 0..3 arrays with no element less than a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors.

16, 124, 2352, 32650, 381076, 5618444, 82479418, 1142396851, 16061107556, 231334122108, 3304782498636, 47013530431780, 672506204379038, 9632530214937964, 137769361857359282, 1971267194035271726

Offset: 1

Author

R. H. Hardin, Nov 11 2013

Keywords

• nonn

Comments

Column 3 of A231586

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 72

Formula

Empirical recurrence of order 72 (see link above)