A223116 - OEIS

A223116

Number of 3Xn 0..2 arrays with exactly floor(3Xn/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order

0, 22, 269, 5624, 64346, 1435644, 17231678, 394101698, 4795863215, 111385873044, 1367910381793, 32104125661092, 396732928643199, 9380176155748724, 116431632349956000, 2768141124993190440, 34474283501877795558

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

OFFSET

1,2

COMMENTS

Row 3 of A223114

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..51

EXAMPLE

Some solutions for n=3

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

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

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