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A221590
T(n,k)=Equals one maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly one of their king-move neighbors in a random 0..3 nXk array
4
1, 2, 2, 4, 8, 4, 8, 40, 40, 8, 16, 180, 418, 180, 16, 32, 772, 3760, 3760, 772, 32, 64, 3264, 31416, 64324, 31416, 3264, 64, 128, 13634, 256736, 1043774, 1043774, 256736, 13634, 128, 256, 56456, 2075520, 16758008, 33535224, 16758008, 2075520, 56456, 256, 512
OFFSET
1,2
COMMENTS
Table starts
...1......2........4.........8.........16.........32........64........128
...2......8.......40.......180........772.......3264.....13634......56456
...4.....40......418......3760......31416.....256736...2075520...16690688
...8....180.....3760.....64324....1043774...16758008.268358624.4294659968
..16....772....31416...1043774...33535224.1073664992
..32...3264...256736..16758008.1073664992
..64..13634..2075520.268358624
.128..56456.16690688
.256.232150
.512
LINKS
EXAMPLE
Some solutions for n=3 k=4
..1..0..0..0....1..0..1..1....0..1..0..0....0..1..1..0....1..1..1..0
..1..1..1..0....1..0..0..0....1..0..1..0....0..0..1..1....1..0..0..0
..1..0..1..1....1..1..1..0....1..0..1..0....1..0..0..1....1..0..0..1
CROSSREFS
Column 1 is A000079(n-1)
Sequence in context: A220545 A220751 A220967 * A137778 A000017 A032522
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jan 20 2013
STATUS
approved