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A237464
Number of (n+1) X (n+1) 0..2 arrays with the maximum plus the lower median minus the upper median of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.
0
81, 2308, 143780, 21134116, 6781496755, 4700362341374, 7302593738902292, 26735744862459553294, 211398124707561970968488
OFFSET
1,1
COMMENTS
Diagonal of A237472.
EXAMPLE
Some solutions for n=3
..0..1..0..2....1..1..0..0....0..2..0..0....1..2..2..0....1..2..2..2
..1..0..0..2....2..2..1..0....1..2..2..1....2..0..2..1....1..2..1..1
..1..1..1..2....2..1..2..1....1..1..0..1....0..2..1..0....0..1..2..1
..0..0..1..0....1..2..2..1....0..1..0..2....1..2..2..2....2..2..2..0
CROSSREFS
Cf. A237472.
Sequence in context: A253399 A236820 A370229 * A233023 A236989 A038676
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 08 2014
STATUS
approved