A183287 Half the number of nX6 binary arrays with the number of 1-1 horizontal, vertical, diagonal and antidiagonal adjacencies equal to the number of 0-0 adjacencies

6, 210, 8016, 385316, 20021342, 1085177164, 60444425412, 3432989914472, 197894482415760, 11543252431044600, 679897604621167200, 40374780115512515920, 2414435498539220478004, 145262547443786234307384

Offset

1,1

Comments

Column 6 of A183289

Links

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

Example

Some solutions for 3X6 with a(1,1)=0
..0..1..1..0..0..0....0..0..0..1..1..1....0..0..1..0..0..1....0..1..0..0..1..0
..1..1..0..0..1..0....0..0..1..0..1..1....1..1..1..0..0..1....1..0..0..1..1..1
..1..0..1..1..0..1....1..1..0..0..1..0....0..1..0..0..1..1....1..0..1..0..0..1

Crossrefs

Sequence in context: A076715 A029549 A183252 * A087639 A028350 A359761

Adjacent sequences: A183284 A183285 A183286 * A183288 A183289 A183290

Keyword

nonn

Author

R. H. Hardin Jan 03 2011

Status

approved