A222826 - OEIS

A222826

Number of nX3 0..3 arrays with no more than floor(nX3/2) elements equal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order

2, 80, 2695, 163059, 4990235, 324288311, 10170499564, 674288738013, 21373928441126, 1435823246721009, 45884479727848365, 3108101397467123619, 99916343889082020272, 6807459787910922090689, 219837420324993531866814

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

OFFSET

1,1

COMMENTS

Column 3 of A222828

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..68

EXAMPLE

Some solutions for n=3

..0..1..2....0..1..1....0..1..2....0..1..2....0..1..2....0..1..2....0..1..2

..1..3..1....2..2..0....2..3..0....1..3..0....2..1..3....0..3..1....3..3..1

..2..1..3....0..3..2....0..3..0....2..0..1....3..0..1....2..3..0....0..2..0