A203248 Number of nX1 0..3 arrays with the counts of all possible adjacent horizontal and vertical pair sum values being within one of each other

4, 16, 48, 116, 220, 288, 232, 96, 1520, 11424, 51588, 147516, 262188, 265968, 118152, 2407728, 21719616, 111520288, 349455712, 664646688, 707435200, 324489120, 7180862720, 69332666120, 376038448800, 1228994674700, 2405966773100

Offset

1,1

Comments

Column 1 of A203252

Links

R. H. Hardin, Table of n, a(n) for n = 1..43

Example

Some solutions for n=8
..1....3....0....3....0....3....3....0....3....3....2....1....3....3....3....3
..1....3....2....3....0....1....3....0....3....0....0....1....0....0....3....3
..2....1....3....2....1....0....0....3....0....0....0....0....1....0....1....2
..3....0....3....0....3....3....0....3....0....1....1....0....3....2....0....0
..3....3....1....0....3....3....2....2....1....1....2....3....3....3....0....3
..1....2....0....3....2....2....3....2....3....3....2....3....2....3....3....1
..0....0....0....1....1....0....1....0....2....3....3....2....0....1....2....0
..0....0....3....0....1....0....0....1....0....2....3....2....0....0....0....0

Crossrefs

Sequence in context: A006009 A261977 A100625 * A223839 A071009 A210066

Adjacent sequences: A203245 A203246 A203247 * A203249 A203250 A203251

Keyword

nonn

Author

R. H. Hardin Dec 30 2011

Status

approved