A183260 Number of nX5 binary arrays with the number of 0-1 adjacencies equal to the number of 0-0 adjacencies.

7, 59, 1074, 23285, 526941, 12358457, 294747516, 7119707510, 173610143327, 4263303128795, 105283377755501, 2612030456816753, 65051981440720321, 1625345752707630215, 40722394587973397684, 1022732537851788857648

Offset

1,1

Comments

Column 5 of A183262

Links

R. H. Hardin, Table of n, a(n) for n = 1..111

Example

Some solutions for 4X5
..0..0..1..0..0....0..0..1..1..1....1..0..0..0..1....1..1..0..0..1
..0..0..0..0..0....1..0..0..0..0....1..1..1..1..1....0..0..0..0..1
..0..1..1..0..1....0..0..0..1..0....0..0..0..1..1....1..0..0..0..1
..0..0..1..1..0....0..0..1..1..1....0..0..0..0..0....1..1..1..1..1

Crossrefs

Sequence in context: A099347 A331709 A203174 * A285227 A358132 A063969

Adjacent sequences: A183257 A183258 A183259 * A183261 A183262 A183263

Keyword

nonn

Author

R. H. Hardin, Jan 03 2011

Status

approved