A222873 Number of nX3 0..3 arrays with no more than floor(nX3/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order

2, 122, 6282, 443510, 23794078, 1698174722, 93656293632, 6637413406814, 372075279639542, 26219034320665058, 1485998820062892388, 104217650825897197592, 5955892893018468638926, 416011416350266218862952

Offset

1,1

Comments

Column 3 of A222878

Links

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

Example

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

Crossrefs

Sequence in context: A332112 A074490 A056638 * A325889 A013475 A013471

Adjacent sequences: A222870 A222871 A222872 * A222874 A222875 A222876

Keyword

nonn

Author

R. H. Hardin Mar 08 2013

Status

approved