A185534 T(n,k)=Number of (n+2)X(k+2) binary arrays with each 3X3 subblock nonsingular

174, 726, 726, 3030, 4362, 3030, 12630, 25854, 25854, 12630, 52662, 150234, 215644, 150234, 52662, 219606, 886926, 1752120, 1752120, 886926, 219606, 915702, 5221098, 14532816, 19941490, 14532816, 5221098, 915702, 3818262, 30631134, 120202866

Offset

1,1

Comments

Table starts

......174........726.........3030..........12630............52662

......726.......4362........25854.........150234...........886926

.....3030......25854.......215644........1752120.........14532816

....12630.....150234......1752120.......19941490........230731304

....52662.....886926.....14532816......230731304.......3749400138

...219606....5221098....120202866.....2662736508......60674682444

...915702...30631134....989438596....30654215226.....978050637454

..3818262..180225834...8169865470...353516027506...15816011545490

.15921462.1059790686..67464328866..4075790123584..255607860729284

.66389334.6228272058.556545963176.46978794076110.4128520011920866

Links

R. H. Hardin, Table of n, a(n) for n = 1..144

Example

Some solutions for 5X4
..1..1..0..0....0..1..0..0....1..0..0..1....0..1..1..1....0..0..1..1
..0..0..1..0....1..1..0..1....1..1..0..1....1..0..1..1....1..1..0..1
..1..0..0..1....0..0..1..0....0..1..1..1....1..1..0..1....0..1..0..0
..0..1..0..0....1..0..0..1....1..1..1..0....0..0..1..0....1..1..1..1
..0..1..1..1....0..1..0..1....0..0..1..0....1..0..1..1....0..0..1..0

Crossrefs

Sequence in context: A249432 A331586 A077395 * A185526 A248458 A053173

Adjacent sequences: A185531 A185532 A185533 * A185535 A185536 A185537

Keyword

nonn,tabl

Author

R. H. Hardin Jan 30 2011

Status

approved