A236989 Number of (n+1) X (n+1) 0..2 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.

81, 2376, 149632, 23825664, 8552563200, 6552043167744, 11244238474313728, 73455045501995974656, 1101668063542970941440000, 39042762540881039290087243776, 4247076756120507105127549666066432

Offset

1,1

Comments

Diagonal of A236997.

Links

R. H. Hardin, Table of n, a(n) for n = 1..13

Example

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

Crossrefs

Cf. A236997.

Sequence in context: A370229 A237464 A233023 * A038676 A016840 A128832

Adjacent sequences: A236986 A236987 A236988 * A236990 A236991 A236992

Keyword

nonn

Author

R. H. Hardin, Feb 02 2014

Status

approved