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A185534 T(n,k)=Number of (n+2)X(k+2) binary arrays with each 3X3 subblock nonsingular 10
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 (list; table; graph; refs; listen; history; text; internal format)
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
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
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jan 30 2011
STATUS
approved

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Last modified February 25 19:26 EST 2024. Contains 370332 sequences. (Running on oeis4.)