A188688 - OEIS

A188688

Number of n X n binary arrays without the pattern 0 1 0 diagonally, vertically, antidiagonally or horizontally.

2, 16, 218, 4008, 139307, 15547072, 3647921173, 1302269111985, 832889881464413, 1248703703842553735, 4253189666054817624993

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

OFFSET

1,1

COMMENTS

Diagonal of A188695.

LINKS

EXAMPLE

Some solutions for 4 X 4

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 08 2011

STATUS

approved