A223050 - OEIS

A223050

Number of nX4 0..3 arrays with exactly floor(nX4/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order

6, 508, 95648, 17704612, 3345698159, 642902149269, 125023235986060, 24532345137855558, 4847658520889741087, 963306978592566283718, 192306743440029495693971, 38537949083984617104985257

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

OFFSET

1,1

COMMENTS

Column 4 of A223052

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..23

EXAMPLE

Some solutions for n=3

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

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

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