A237864 Number of (n+1)X(4+1) 0..2 arrays with the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

6030, 68830, 811498, 9902380, 115821338, 1360467556, 16245005586, 195628632968, 2309260676524, 27312310344552, 325894030112650, 3898536856894944, 46199441511935170, 548067141567809552, 6532107606070688156

Offset

1,1

Comments

Column 4 of A237868

Links

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

Example

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

Crossrefs

Sequence in context: A239176 A236975 A206113 * A031821 A203352 A064248

Adjacent sequences: A237861 A237862 A237863 * A237865 A237866 A237867

Keyword

nonn

Author

R. H. Hardin, Feb 14 2014

Status

approved