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A221551
T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without move-in move-out left turns
7
0, 1, 1, 2, 10, 2, 4, 72, 71, 4, 8, 503, 1930, 494, 8, 16, 3517, 48018, 47976, 3448, 16, 32, 24546, 1200093, 4107189, 1196232, 24055, 32, 64, 171268, 29961271, 354947070, 354544219, 29856238, 167811, 64, 128, 1194876, 747830157, 30632388919
OFFSET
1,4
COMMENTS
Table starts
...0.......1.........2...........4............8..........16............32
...1......10........72.........503.........3517.......24546........171268
...2......71......1930.......48018......1200093....29961271.....747830157
...4.....494.....47976.....4107189....354947070.30632388919.2643033185667
...8....3448...1196232...354544219.106036544373
..16...24055..29856238.30591390580
..32..167811.745144793
..64.1170709
.128
LINKS
EXAMPLE
Some solutions for n=3 k=4
..2..1..0..1....1..0..1..1....0..2..0..0....1..0..0..0....2..2..0..0
..1..0..0..1....4..1..0..1....2..2..1..1....1..2..3..0....1..0..3..2
..1..2..1..2....1..1..0..1....0..2..2..0....1..2..2..0....0..1..1..0
CROSSREFS
Sequence in context: A215749 A102775 A154032 * A010700 A121521 A280033
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jan 19 2013
STATUS
approved