A208870 - OEIS

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

(list; graph; refs; listen; history; text; internal format)

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