A208870 Number of nX6 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors

187, 334618, 683903931, 1404920207834, 2887736845657700, 5935974611645510227, 12201956787655438957014, 25082292111547260024518313, 51559059416667161930347967813, 105984596999356698511898369562313

Offset

1,1

Comments

Column 6 of A208872

Links

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

Example

Some solutions for n=4
..0..0..0..0..0..1....0..0..0..0..0..0....0..0..0..1..2..3....0..0..0..0..0..1
..1..1..1..1..0..1....1..1..2..1..1..1....2..1..2..3..1..1....1..1..2..1..3..2
..0..0..0..2..3..1....0..1..2..0..3..2....1..0..2..1..3..3....2..3..0..3..1..0
..1..2..0..1..0..0....1..2..3..0..0..3....1..2..0..2..2..1....2..1..0..3..3..3

Crossrefs

Sequence in context: A241333 A223060 A208862 * A208877 A208173 A200799

Adjacent sequences: A208867 A208868 A208869 * A208871 A208872 A208873

Keyword

nonn

Author

R. H. Hardin Mar 02 2012

Status

approved