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A250833
Number of (n+1) X (n+1) 0..2 arrays with no 2 X 2 subblock having a diagonal absolute difference less than its antidiagonal absolute difference.
0
55, 4131, 1301955, 1751284191, 10042099602523, 245660147951906863, 25646762400407469919163, 11428578484306710530465058551
OFFSET
1,1
COMMENTS
Diagonal of A250841.
EXAMPLE
Some solutions for n=2
..2..0..2....0..2..1....0..0..2....1..0..2....2..0..1....1..1..0....1..1..2
..1..0..2....2..0..0....2..2..0....1..2..2....2..0..1....2..0..1....2..2..2
..0..2..2....0..1..1....2..0..1....2..1..0....1..1..1....1..0..2....2..2..0
CROSSREFS
Cf. A250841.
Sequence in context: A081993 A060077 A035323 * A206097 A103918 A013537
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 27 2014
STATUS
approved