A215954 - OEIS

A215954

Number of horizontal, vertical and diagonal neighbor colorings of the even squares of an nX3 array with new integer colors introduced in row major order

1, 2, 10, 29, 366, 1534, 35167, 188835, 6618472, 42756208, 2081922515, 15590248868, 993343650912, 8414029179365, 673316834487162, 6340176007793060, 618445940056365121, 6390402969619162909, 742701928727400476918

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

OFFSET

1,2

COMMENTS

Column 3 of A215959

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..41

EXAMPLE

Some solutions for n=4

..0..x..1....0..x..1....0..x..1....0..x..1....0..x..1....0..x..1....0..x..1

..x..2..x....x..2..x....x..2..x....x..2..x....x..1..x....x..1..x....x..2..x

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