A203597 Number of nX4 0..2 arrays with the counts of all possible adjacent horizontal and vertical pair sum values being within one of each other.

26, 16, 1430, 20000, 584450, 37380604, 126312616, 51978629884, 1008504232796

Offset

1,1

Comments

Column 4 of A203600

Links

Table of n, a(n) for n=1..9.

Example

Some solutions for n=4
..2..0..1..0....2..2..1..2....2..2..2..2....0..2..2..0....0..0..2..0
..2..2..0..0....2..2..1..0....0..1..0..2....0..1..2..2....0..0..1..0
..1..2..0..0....2..0..1..0....0..0..1..1....0..0..1..2....1..2..2..1
..2..2..1..1....1..0..0..0....0..0..2..2....0..1..1..2....2..2..2..0

Crossrefs

Sequence in context: A305044 A064267 A131083 * A040652 A154295 A383152

Adjacent sequences: A203594 A203595 A203596 * A203598 A203599 A203600

Keyword

nonn

Author

R. H. Hardin, Jan 03 2012

Status

approved