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A186923
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces
8
0, 704, 704, 2176, 13440, 2176, 30976, 253312, 253312, 30976, 166272, 4615296, 7946432, 4615296, 166272, 1567936, 86388160, 394724320, 394724320, 86388160, 1567936, 10419200, 1613838400, 15491352288, 39825200832, 15491352288
OFFSET
1,2
COMMENTS
Table starts
..........0............704.............2176.............30976
........704..........13440...........253312...........4615296
.......2176.........253312..........7946432.........394724320
......30976........4615296........394724320.......39825200832
.....166272.......86388160......15491352288.....3861027028096
....1567936.....1613838400.....686342587904...380882328583712
...10419200....30161413056...28533024476512.37393297725524928
...85438016...563483938112.1225810619871552
..615338112.10530498631296
.4793908736
LINKS
EXAMPLE
Some solutions for 4X3
..0..1..0....2..2..0....2..2..1....2..0..1....2..2..0....0..2..2....0..1..3
..3..2..1....1..3..3....0..3..3....2..1..3....3..1..1....2..3..1....2..2..1
..1..2..3....3..3..2....2..3..2....3..0..1....0..0..2....3..2..1....3..1..2
..3..2..1....0..1..2....2..1..0....3..0..3....0..0..0....1..0..1....1..0..3
CROSSREFS
Column 1 is A185799
Sequence in context: A253396 A188370 A185571 * A185807 A105846 A323342
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Feb 28 2011
STATUS
approved