A237459 Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

4272, 25974, 125998, 594190, 2864838, 14469792, 71637702, 345945382, 1692387998, 8423481016, 41623347902, 203854940676, 1002036877470, 4949498743130, 24401744486702, 120014028398474, 590821956837072, 2912112513596448

Offset

1,1

Comments

Column 4 of A237463

Links

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

Example

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

Crossrefs

Sequence in context: A231195 A342565 A362877 * A259951 A101619 A239255

Adjacent sequences: A237456 A237457 A237458 * A237460 A237461 A237462

Keyword

nonn

Author

R. H. Hardin, Feb 08 2014

Status

approved