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A234552
Number of (n+1) X (3+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3 (constant-stress 1 X 1 tilings).
1
20416, 184816, 1659728, 15022720, 135896344, 1236987584, 11259287952, 103178794676, 945421176696, 8728777849856, 80564597517120, 749961596817872, 6976731437481296, 65526946754262876, 614749169773668664
OFFSET
1,1
LINKS
EXAMPLE
Some solutions for n=2:
0 3 0 3 3 4 4 6 4 2 2 5 1 2 1 1 2 0 1 3
6 6 6 6 6 4 1 0 4 5 2 2 3 1 3 6 3 4 2 1
2 5 2 5 3 4 4 0 4 2 2 5 4 5 4 4 1 5 6 2
CROSSREFS
Column 3 of A234555.
Sequence in context: A103912 A256104 A269279 * A223466 A281658 A234304
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 28 2013
STATUS
approved