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A221419
T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, with every occupancy equal to zero or two
11
0, 2, 0, 0, 4, 0, 4, 10, 8, 0, 0, 29, 0, 16, 0, 8, 84, 226, 150, 32, 0, 0, 242, 0, 1766, 0, 64, 0, 16, 696, 6798, 17792, 13794, 2250, 128, 0, 0, 2000, 0, 193809, 0, 107695, 0, 256, 0, 32, 5744, 198823, 2026142, 5501288, 3813004, 840673, 33750, 512, 0, 0, 16492, 0
OFFSET
1,2
COMMENTS
Table starts
.0....2......0.........4.........0............8..........0...........16
.0....4.....10........29........84..........242........696.........2000
.0....8......0.......226.........0.........6798..........0.......198823
.0...16....150......1766.....17792.......193809....2026142.....21225843
.0...32......0.....13794.........0......5501288..........0...2238166260
.0...64...2250....107695...3813004....156275181.6079373768.237226735061
.0..128......0....840673.........0...4438212854..........0
.0..256..33750...6561928.817415641.126047555332
.0..512......0..51218473.........0
.0.1024.506250.399777826
.0.2048......0
.0.4096
LINKS
EXAMPLE
Some solutions for n=3 k=4
..2..0..0..2....0..2..2..0....0..2..0..0....0..2..0..0....2..2..0..0
..0..2..0..0....0..2..0..2....2..2..2..2....0..2..2..0....0..0..2..2
..0..2..2..2....0..2..2..0....0..0..0..2....2..2..2..0....2..0..2..0
CROSSREFS
Sequence in context: A323885 A137513 A365714 * A140668 A353369 A323900
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jan 15 2013
STATUS
approved