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A235021 Number of (n+1) X (3+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). 1
1248, 4312, 14800, 51220, 177520, 617600, 2152744, 7527124, 26367488, 92632604, 326009192, 1150507192, 4067126368, 14415310196, 51176035576, 182134771204, 649220616600, 2319643303000, 8300224862256, 29766948184132, 106901780220416 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
Empirical recurrence of order 63 (see link above).
EXAMPLE
Some solutions for n=4:
4 0 2 1 3 5 3 5 4 3 1 3 4 2 4 5 5 4 2 4
5 4 3 5 5 4 5 4 0 2 3 2 5 0 5 3 0 2 3 2
1 3 5 4 1 3 1 3 5 4 2 4 4 2 4 5 4 3 1 3
0 5 4 0 5 4 5 4 1 3 4 3 0 1 0 4 0 2 3 2
1 3 5 4 1 3 1 3 5 4 2 4 2 0 2 3 4 3 1 3
CROSSREFS
Column 3 of A235026.
Sequence in context: A114528 A069146 A251648 * A184500 A234212 A047629
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 02 2014
STATUS
approved

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)