A203359 Number of nX5 binary arrays with every 1 immediately preceded by 0 to the left or above.

8, 182, 3042, 55517, 984703, 17631496, 314688054, 5622720187, 100426911671, 1793946112019, 32044214326230, 572395728321380, 10224472420371970, 182635919619144937, 3262355031315093696, 58274202397081882837

Offset: 1

Author

R. H. Hardin Dec 31 2011

Keywords

• nonn

Comments

Column 5 of A203362

Examples

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

Links

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

Formula

Empirical: a(n) = 8*a(n-1) +148*a(n-2) +471*a(n-3) +578*a(n-4) -25*a(n-5) -302*a(n-6) +171*a(n-7) +90*a(n-8)