A236607 Number of (n+1)X(4+1) 0..2 arrays colored with the maximum plus the lower median minus the minimum of every 2X2 subblock.

12004, 157852, 2192662, 32232284, 482194440, 7140442816, 105098040870, 1555308108966, 23066776469364, 341316489224086, 5045671685700262, 74678192102404218, 1105663993202224866, 16360739984884517126

Offset

1,1

Comments

Column 4 of A236610

Links

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

Example

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

Crossrefs

Sequence in context: A237491 A235074 A251163 * A156713 A183059 A287046

Adjacent sequences: A236604 A236605 A236606 * A236608 A236609 A236610

Keyword

nonn

Author

R. H. Hardin, Jan 29 2014

Status

approved