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A183633
Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock summing to 6
0
44, 340, 2300, 14644, 90524, 551380, 3333500, 20077684
OFFSET
1,1
COMMENTS
Diagonal of A183642
EXAMPLE
Some solutions for 3X3
..1..1..0....0..2..0....2..2..2....3..1..0....1..1..1....2..0..2....1..3..1
..1..3..2....1..3..1....1..1..1....0..2..3....2..2..2....3..1..3....0..2..0
..1..1..0....2..0..2....3..1..3....3..1..0....2..0..2....0..2..0....1..3..1
CROSSREFS
Sequence in context: A001689 A306937 A199828 * A200450 A024304 A190420
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 06 2011
STATUS
approved