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A221890
T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without 2-loops or left turns
7
0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 37, 0, 0, 0, 0, 169, 202, 90, 0, 0, 0, 811, 2722, 4137, 204, 0, 0, 0, 3878, 31881, 154458, 56313, 1297, 0, 0, 0, 18502, 416630, 5488703, 5408074, 760578, 4608, 0, 0, 0, 88302, 5496803, 201212852, 537483861, 216702488, 10743570
OFFSET
1,8
COMMENTS
Table starts
.0.0.....0........0.........0.........0...........0..........0........0......0
.0.0.....8.......37.......169.......811........3878......18502....88302.421463
.0.0.....0......202......2722.....31881......416630....5496803.71900708
.0.0....90.....4137....154458...5488703...201212852.7816225089
.0.0...204....56313...5408074.537483861.57983867320
.0.0..1297...760578.216702488
.0.0..4608.10743570
.0.0.23159
.0.0
.0
LINKS
EXAMPLE
Some solutions for n=4 k=4
..1..3..1..0....0..1..2..1....0..2..2..1....0..2..1..1....0..1..1..0
..0..0..3..1....0..2..2..0....0..0..2..0....1..1..2..0....1..2..1..1
..0..2..0..0....1..2..0..1....0..3..2..1....1..2..0..0....1..3..2..0
..1..1..2..1....0..1..3..0....0..1..2..0....0..2..3..0....0..1..2..0
CROSSREFS
Sequence in context: A028608 A028600 A299165 * A047758 A186980 A171918
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jan 30 2013
STATUS
approved