A185531 Number of (n+2)X8 binary arrays with each 3X3 subblock nonsingular

219606, 5221098, 120202866, 2662736508, 60674682444, 1376360631638, 31056846439654, 703501386832854, 15929983279906354, 360373150531607944, 8156890014917199048, 184637748007156575022, 4178612067273729478560

Offset

1,1

Comments

Column 6 of A185534

Links

R. H. Hardin, Table of n, a(n) for n = 1..148

Example

Some solutions for 4X8
..0..0..1..1..0..1..0..1....0..0..1..0..0..1..1..0....0..0..1..1..0..1..0..1
..0..1..1..0..0..1..1..1....0..1..0..1..0..0..1..0....0..1..0..1..0..0..1..0
..1..1..0..0..1..1..0..0....1..1..1..0..1..0..0..1....1..1..1..0..1..1..1..0
..0..0..1..1..1..0..0..1....0..0..1..0..0..1..1..0....0..0..1..1..0..1..1..1

Crossrefs

Sequence in context: A072189 A187865 A201227 * A258678 A254912 A254905

Adjacent sequences: A185528 A185529 A185530 * A185532 A185533 A185534

Keyword

nonn

Author

R. H. Hardin Jan 30 2011

Status

approved