A208783 - OEIS

A208783

Number of nX3 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any antidiagonal neighbor (colorings ignoring permutations of colors)

5, 114, 9089, 1515903, 435411946, 193010377345, 122941305336223, 106980807941644808, 122461210700419700713, 179068063215679396855393, 326696607497802174915500964, 729453937748303441283299140497

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

OFFSET

1,1

COMMENTS

Column 3 of A208788

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..185

EXAMPLE

Some solutions for n=4

..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..1....0..1..0

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

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