A237549 Number of (n+1)X(n+1) 0..2 arrays with the maximum minus the upper median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

81, 1668, 60002, 3207808, 501667350, 184415543478, 177367882314550, 366119804483636046, 1978497544874844832642, 25098928376580088624364564, 821453000361180626304440936512

Offset

1,1

Comments

Diagonal of A237557

Links

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

Example

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

Crossrefs

Sequence in context: A096302 A297681 A237404 * A107914 A050634 A065791

Adjacent sequences: A237546 A237547 A237548 * A237550 A237551 A237552

Keyword

nonn

Author

R. H. Hardin, Feb 09 2014

Status

approved