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A185807
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace
9
0, 704, 704, 2176, 13440, 2176, 30976, 260544, 260544, 30976, 166272, 5177344, 11019840, 5177344, 166272, 1567936, 104024384, 593036512, 593036512, 104024384, 1567936, 10419200, 2091689856, 29410603520, 77815012608, 29410603520
OFFSET
1,2
COMMENTS
Table starts
..........0............704.............2176..............30976
........704..........13440...........260544............5177344
.......2176.........260544.........11019840..........593036512
......30976........5177344........593036512........77815012608
.....166272......104024384......29410603520......9977246681216
....1567936.....2091689856....1501824774848...1288126250997184
...10419200....42093682560...75902079167968.166089641496321408
...85438016...847003638592.3849846787713472
..615338112.17044363936064
.4793908736
LINKS
EXAMPLE
Some solutions for 4X3
..2..0..0....2..2..2....0..0..3....2..2..2....2..0..0....2..3..0....0..2..2
..1..1..2....3..3..3....3..0..0....3..1..0....0..0..0....2..2..2....3..3..1
..3..2..1....1..2..2....1..0..2....1..0..1....2..2..0....3..2..3....0..2..2
..2..1..2....1..3..2....0..2..2....1..0..1....0..3..3....1..0..1....2..3..1
CROSSREFS
Sequence in context: A188370 A185571 A186923 * A105846 A323342 A237009
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Feb 04 2011
STATUS
approved