A237771 Number of (n+1)X(n+1) 0..2 arrays with the maximum plus the upper median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

81, 1456, 44224, 2255544, 331842772, 117723591636, 102404775087552, 203849177456550610, 1004253131939214737666, 11987401934837625930474512, 346393910212793505363317222720

Offset

1,1

Comments

Diagonal of A237779

Links

Table of n, a(n) for n=1..11.

Example

Some solutions for n=3
..0..1..0..2....2..0..1..1....2..2..1..1....2..0..0..0....0..1..1..1
..1..1..2..0....1..1..0..2....2..0..0..0....0..0..1..1....2..0..1..2
..1..2..0..1....0..1..2..1....0..1..1..2....2..1..1..2....1..2..0..2
..2..0..1..0....1..2..1..0....1..1..2..2....2..0..2..0....1..0..0..1

Crossrefs

Sequence in context: A236801 A282646 A283542 * A110921 A236867 A203650

Adjacent sequences: A237768 A237769 A237770 * A237772 A237773 A237774

Keyword

nonn

Author

R. H. Hardin, Feb 13 2014

Status

approved