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A234650 Number of (n+1) X (n+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings). 0
160, 2648, 28496, 274520, 2113072, 16899896, 118121744, 888784184, 6128843440 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
Some solutions for n=3:
3 0 4 0 1 3 4 0 0 4 0 5 5 5 5 5 4 0 4 2
3 4 4 4 2 0 5 5 2 2 2 3 4 0 4 0 0 0 0 2
4 1 5 1 2 4 5 1 5 1 5 2 5 5 5 5 5 1 5 3
1 2 2 2 5 3 0 0 3 3 3 4 0 4 0 4 1 1 1 3
CROSSREFS
Diagonal of A234658.
Sequence in context: A013446 A013444 A013448 * A214354 A188306 A189351
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 29 2013
STATUS
approved

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Last modified June 23 20:17 EDT 2024. Contains 373653 sequences. (Running on oeis4.)