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A222690
T(n,k)=Number of nXk 0..2 arrays with exactly floor(nXk/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order
14
1, 0, 0, 0, 3, 0, 3, 4, 8, 0, 4, 18, 32, 50, 0, 8, 56, 220, 420, 216, 0, 10, 237, 664, 3189, 2050, 1120, 0, 50, 784, 7248, 29770, 47696, 32296, 5440, 0, 66, 3218, 25642, 288829, 419562, 723244, 159672, 27576, 0, 216, 11152, 298371, 3056797, 12765040, 20259516
OFFSET
1,5
COMMENTS
Table starts
.1........0...........0..............3................4...................8
.0........3...........4.............18...............56.................237
.0........8..........32............220..............664................7248
.0.......50.........420...........3189............29770..............288829
.0......216........2050..........47696...........419562............12765040
.0.....1120.......32296.........723244.........20259516...........589802909
.0.....5440......159672.......11082863........301760538.........27752564898
.0....27576.....2593768......171281610......14776550335.......1319414370191
.0...138560....13108760.....2665243912.....223789472088......63167849881088
.0...704880...215573760....41702927217...11086737070564....3040537134742112
.0..3590400..1103125848...655500979620..169432535832409..146998128651407720
.0.18382208.18291819408.10342682216196.8466158066084383.7133080659964442596
LINKS
EXAMPLE
Some solutions for n=3 k=4
..0..0..1..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..0....0..0..1..2....0..0..0..1....1..0..1..1....0..0..0..0
..1..0..0..0....0..2..2..2....0..2..0..2....1..1..1..1....0..1..1..2
CROSSREFS
Row 1 is A222395
Sequence in context: A111862 A277092 A060858 * A222794 A127749 A198431
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Feb 28 2013
STATUS
approved