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A235250 Number of (n+1) X (n+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 7, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). 0
184, 2592, 24232, 247368, 1951752, 17318888, 126993640, 1048328248, 7433492968 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A235258.
LINKS
EXAMPLE
Some solutions for n=3:
5 4 5 3 1 4 2 6 5 1 6 0 0 4 1 3 1 7 3 6
0 6 0 5 4 0 5 2 1 4 2 3 4 1 5 0 3 2 5 1
5 4 5 3 0 3 1 5 6 2 7 1 2 6 3 5 0 6 2 5
0 6 0 5 4 0 5 2 4 7 5 6 5 2 6 1 3 2 5 1
CROSSREFS
Sequence in context: A234146 A164997 A121733 * A221931 A223117 A221782
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 05 2014
STATUS
approved

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Last modified February 25 16:57 EST 2024. Contains 370332 sequences. (Running on oeis4.)