A237327 Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

1264, 8588, 58296, 414268, 2870224, 19874388, 137663582, 978134492, 6780688008, 46959680920, 325344257654, 2311691261008, 16025622824382, 110986965737552, 768943917811452, 5463623395524888, 37876242151447786, 262316002867523352

Offset

1,1

Comments

Column 3 of A237332

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A205762 A331824 A234676 * A233887 A234147 A252562

Adjacent sequences: A237324 A237325 A237326 * A237328 A237329 A237330

Keyword

nonn

Author

R. H. Hardin, Feb 06 2014

Status

approved