A188309 Number of (n+1)X8 binary arrays with every 2X2 subblock sum equal to exactly one or two horizontal and vertical neighbor 2X2 subblock sums

3616, 348728, 10660334, 396560236, 14070003616, 520845610752

Offset

1,1

Comments

Column 7 of A188311

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for 3X8
..0..0..0..1..1..1..0..0....0..1..0..0..0..1..0..0....0..0..1..0..1..1..1..1
..1..0..0..1..1..1..0..0....0..1..0..1..0..1..0..1....0..1..0..0..0..0..1..0
..0..0..0..1..0..1..0..0....0..1..0..0..0..1..0..0....0..0..1..1..1..1..1..1

Crossrefs

Sequence in context: A107538 A270260 A106433 * A185495 A029829 A187745

Adjacent sequences: A188306 A188307 A188308 * A188310 A188311 A188312

Keyword

nonn

Author

R. H. Hardin Mar 27 2011

Status

approved