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A251275
Number of (n+1)X(n+1) 0..3 arrays with no 2X2 subblock having its maximum diagonal element less than its minimum antidiagonal element
1
230, 164800, 1497752279, 172919373209920, 253597772369472323328, 4724687679127024503784365440, 1118224116880857883546078105623321344, 3362121790823480902189703776276345356341787648
OFFSET
1,1
COMMENTS
Diagonal of A251283
LINKS
EXAMPLE
Some solutions for n=2
..1..0..0....1..3..3....1..2..3....2..0..2....1..0..1....3..0..0....0..0..1
..2..0..1....3..3..1....0..3..3....0..0..2....1..2..1....2..0..2....1..0..3
..0..2..1....0..1..1....2..2..2....0..0..0....3..2..2....0..0..2....2..2..3
CROSSREFS
Sequence in context: A231107 A231251 A051183 * A323321 A156742 A031965
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 01 2014
STATUS
approved