A203596 Number of nX3 0..2 arrays with the counts of all possible adjacent horizontal and vertical pair sum values being within one of each other

18, 46, 172, 1430, 17452, 225034, 3278068, 44996822, 678210234, 10630860542, 166229546776, 2711212581278, 44274361678950

Offset

1,1

Comments

Column 3 of A203600

Links

Table of n, a(n) for n=1..13.

Example

Some solutions for n=5
..2..2..2....0..0..0....1..2..2....2..1..0....1..0..0....1..2..2....2..1..0
..2..0..0....1..2..2....1..2..2....2..2..1....2..1..2....2..2..2....2..2..1
..1..0..0....2..2..2....1..2..0....2..0..0....2..2..2....1..0..0....2..0..0
..2..2..1....1..1..0....0..1..0....0..0..2....0..0..0....0..0..2....2..0..0
..1..0..0....0..0..0....0..0..0....0..1..2....1..1..0....0..1..1....1..1..1

Crossrefs

Sequence in context: A250784 A250731 A353209 * A305171 A034132 A218630

Adjacent sequences: A203593 A203594 A203595 * A203597 A203598 A203599

Keyword

nonn

Author

R. H. Hardin Jan 03 2012

Status

approved