A237722 Number of (n+1)X(n+1) 0..2 arrays with the maximum plus the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

81, 2152, 122940, 15828110, 4174594857, 2309067655254, 2784288129137988, 7531980120186764378

Offset

1,1

Comments

Diagonal of A237730

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A237376 A296577 A237316 * A250436 A237545 A253399

Adjacent sequences: A237719 A237720 A237721 * A237723 A237724 A237725

Keyword

nonn

Author

R. H. Hardin, Feb 12 2014

Status

approved