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A234435
Number of (n+1) X (n+1) 0..2 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant-stress 1 X 1 tilings).
0
32, 582, 17200, 896112, 72539432, 11533082488, 2561421896376, 1379501791207360, 834355608891492928, 1756003516595468503128
OFFSET
1,1
EXAMPLE
Some solutions for n=3:
1 0 1 2 1 2 2 2 1 0 1 2 2 2 1 1 1 2 2 2
1 1 1 1 2 2 1 0 0 0 0 2 0 1 1 2 2 2 1 0
2 1 2 1 2 1 1 1 1 2 1 2 1 1 2 2 2 1 1 1
2 0 2 2 1 1 0 1 0 2 0 0 0 1 1 2 1 1 2 1
CROSSREFS
Diagonal of A234443.
Sequence in context: A316874 A317602 A054338 * A010557 A022756 A332262
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 26 2013
STATUS
approved