A232080 Number of (4+1)X(n+1) 0..1 arrays with every element equal to some horizontal, diagonal or antidiagonal neighbor, with top left element zero.

111, 3985, 82996, 2265691, 64298979, 1786680190, 49535329657, 1375366780223, 38192786490900, 1060470627750905, 29445068097883913, 817579005907041518, 22701109558899272767, 630324525317504125167, 17501743597007465575440

Offset: 1

Author

R. H. Hardin, Nov 17 2013

Keywords

• nonn

Comments

Row 4 of A232076

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 54

Formula

Empirical recurrence of order 54 (see link above)