A188307 Number of (n+1)X6 binary arrays with every 2X2 subblock sum equal to exactly one or two horizontal and vertical neighbor 2X2 subblock sums

380, 14832, 203584, 3415196, 53468700, 878907878, 14070003616, 228625683370, 3680915898074, 59626244517814, 962293522215168, 15566719628153548, 251445428797343950, 4065446796913711010, 65691624104999816724

Offset

1,1

Comments

Column 5 of A188311

Links

R. H. Hardin, Table of n, a(n) for n = 1..22

Example

Some solutions for 3X6
..0..1..0..1..1..1....0..0..0..1..1..0....0..1..0..0..1..1....1..0..1..0..1..0
..0..1..0..0..1..0....0..1..0..1..0..1....1..1..1..1..0..1....1..1..0..1..1..1
..1..0..1..0..1..0....0..0..0..1..1..0....0..1..0..0..1..1....0..1..0..1..1..1

Crossrefs

Sequence in context: A250635 A233952 A259520 * A214145 A185493 A023910

Adjacent sequences: A188304 A188305 A188306 * A188308 A188309 A188310

Keyword

nonn

Author

R. H. Hardin Mar 27 2011

Status

approved