A222694 - OEIS

A222694

Number of 5Xn 0..2 arrays with exactly floor(5Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order

0, 216, 2050, 47696, 419562, 12765040, 126928736, 4292369132, 46437072442, 1665124000236, 18888312086238, 693531743163910, 8036001935941558, 298077593903645728, 3488969551802753323, 130077277806080796677

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

OFFSET

1,2

COMMENTS

Row 5 of A222690

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..31

EXAMPLE

Some solutions for n=3

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

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

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