A183254 Half the number of nX(n+1) binary arrays with the number of 1-1 adjacencies equal to the number of 0-0 adjacencies

1, 6, 164, 29100, 23226996, 78105333988, 1085842065488760, 61809250773984051624, 14321625018219960186079740, 13455454986809863455046035960864, 51120484864308189550041467825141803152

Offset

1,2

Comments

Superdiagonal 1 of A183253

Links

R. H. Hardin, Table of n, a(n) for n = 1..42

Example

Some solutions with a(1,1)=0 for 4X5
..0..1..0..1..0....0..1..1..1..0....0..1..0..1..1....0..0..1..1..0
..0..1..0..1..0....1..0..0..0..1....0..1..1..0..1....1..0..1..1..1
..1..1..0..1..1....0..0..1..1..0....0..1..1..0..0....0..0..1..0..0
..0..1..0..0..0....1..1..0..1..0....1..0..0..0..1....1..1..0..0..1

Crossrefs

Sequence in context: A078535 A177781 A178435 * A143534 A104729 A106661

Adjacent sequences: A183251 A183252 A183253 * A183255 A183256 A183257

Keyword

nonn

Author

R. H. Hardin Jan 03 2011

Status

approved