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A234243
Number of (n+1) X (3+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant-stress 1 X 1 tilings).
1
72616, 1520024, 32965378, 725628904, 16021165696, 354931091338, 7860119921126, 174432581257432, 3867909998650764, 85938055271287920, 1907697414837426570, 42433568115687443458, 942986024965772638510, 20999313840564845514606
OFFSET
1,1
LINKS
EXAMPLE
Some solutions for n=1:
3 5 7 7 4 6 3 2 3 1 0 5 1 3 0 1 5 5 4 7
0 0 0 2 1 1 0 1 6 6 3 6 2 6 1 0 2 4 1 2
CROSSREFS
Column 3 of A234245.
Sequence in context: A093212 A114258 A238151 * A260053 A237555 A186047
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 21 2013
STATUS
approved