A223003 - OEIS

A223003

Number of 4Xn 0..2 arrays with no more than floor(4Xn/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order

14, 391, 13655, 486262, 18420655, 713884175, 28143883707, 1121835123141, 45093000204487, 1824408455268081, 74199480797734648, 3030607349703160325, 124221672704753507355, 5107012096035147244881, 210500491692841318950250

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OFFSET

1,1

COMMENTS

Row 4 of A223000

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..18

EXAMPLE

Some solutions for n=3

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

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

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