A186804 - OEIS

A186804

Number of (n+2)X9 binary arrays with no 3X3 subblock commuting with any horizontal or vertical neighbor 3X3 subblock

117671951, 47657171957, 19839195220290, 8263791225579948, 3439855711337907764

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

OFFSET

1,1

COMMENTS

Column 7 of A186806

LINKS

EXAMPLE

Some solutions for 4X9

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved