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A222747
T(n,k)=Number of nXk 0..3 arrays with exactly floor(nXk/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order
10
1, 0, 0, 0, 6, 0, 6, 32, 20, 0, 20, 657, 2438, 685, 0, 20, 7546, 126947, 125094, 5370, 0, 70, 124363, 6363724, 27397461, 6821264, 123410, 0, 685, 1710608, 390671426, 5989744766, 6178897165, 413021606, 1341616, 0, 2808, 26389570, 20825891902
OFFSET
1,5
COMMENTS
Table starts
.1...........0................0....................6.....................20
.0...........6...............32..................657...................7546
.0..........20.............2438...............126947................6363724
.0.........685...........125094.............27397461.............5989744766
.0........5370..........6821264...........6178897165..........4906560167364
.0......123410........413021606........1424636571214.......4777709698876890
.0.....1341616......24065512554......332960192034230....4001484076145095954
.0....25106526....1471765337998....78562540663580982.4007703500495273447052
.0...321557310...87152464030990.18671065206165526715
.0..5447475968.5404644628233066
.0.76079350800
.0
LINKS
EXAMPLE
Some solutions for n=3 k=4
..0..1..1..2....0..1..2..3....0..1..1..1....0..1..1..2....0..1..0..2
..2..1..1..3....1..0..1..2....2..1..2..1....0..0..1..1....2..2..2..0
..2..2..1..2....2..1..2..1....3..2..0..1....1..0..3..1....0..0..3..2
CROSSREFS
Row 1 is A222604
Sequence in context: A280480 A223104 A222722 * A222608 A353091 A021900
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Mar 04 2013
STATUS
approved