A185745 Number of (n+1) X 5 binary arrays with every 2 X 2 subblock trace equal to some horizontal or vertical neighbor 2 X 2 subblock trace.

144, 2568, 33768, 458320, 6315600, 86568360, 1188841336, 16318664224, 224021622784, 3075298469624, 42216821321040, 579540226200864, 7955761780283376, 109214412937074224, 1499264040329449904

Offset

1,1

Comments

Column 4 of A185750.

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 3 X 5
..0..1..1..0..1....0..0..0..0..0....1..1..1..0..0....1..1..0..0..0
..0..0..1..1..1....1..1..1..0..0....0..0..0..0..1....0..0..0..1..1
..0..0..0..0..0....1..1..1..1..0....0..0..0..0..0....1..0..0..0..0

Crossrefs

Cf. A185750.

Sequence in context: A268625 A121344 A232819 * A075739 A074316 A264107

Adjacent sequences: A185742 A185743 A185744 * A185746 A185747 A185748

Keyword

nonn

Author

R. H. Hardin, Feb 01 2011

Status

approved