A203250 Number of nX3 0..3 arrays with the counts of all possible adjacent horizontal and vertical pair sum values being within one of each other

48, 12, 680, 18440, 62512, 1282126, 178938580, 3036458924, 4159465756

Offset

1,1

Comments

Column 3 of A203252

Links

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

Example

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

Crossrefs

Sequence in context: A087407 A285660 A299585 * A124354 A033979 A033368

Adjacent sequences: A203247 A203248 A203249 * A203251 A203252 A203253

Keyword

nonn

Author

R. H. Hardin Dec 30 2011

Status

approved