A231520 Number of nX5 0..1 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors.

12, 342, 4665, 70462, 1031105, 15000701, 219937967, 3222629836, 47159743290, 690399979855, 10108622083346, 147993608472149, 2166661772771563, 31720960292577983, 464409247083163776, 6799146031063407846

Offset: 1

Author

R. H. Hardin, Nov 10 2013

Keywords

• nonn

Comments

Column 5 of A231523

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 70

Formula

Empirical recurrence of order 70 (see link above)