A185888 1/729 the number of (n+2) X 8 0..2 arrays with no 3 X 3 subblock trace equal to any horizontal or vertical neighbor 3 X 3 subblock trace.

135783240, 158165462152, 206151739863904, 266120814001133510, 341943649302595064930, 440856600893036211079732, 568914892688849805876146686, 734238018212525212675553891544

Offset

1,1

Comments

Column 6 of A185891.

Links

R. H. Hardin, Table of n, a(n) for n = 1..9

Example

Some solutions for 4 X 8
..0..0..0..0..1..2..0..2....0..0..0..0..0..0..1..1....0..0..0..0..1..2..0..0
..0..0..0..0..0..1..0..1....0..0..0..0..0..1..0..1....0..0..0..0..0..0..0..1
..0..0..0..1..0..2..2..1....0..0..0..1..0..2..2..1....0..0..0..1..0..1..2..0
..0..0..1..0..0..0..0..1....0..0..1..0..0..0..0..0....0..0..1..0..0..0..1..2

Crossrefs

Cf. A185891.

Sequence in context: A346259 A152960 A034590 * A105297 A298729 A203505

Adjacent sequences: A185885 A185886 A185887 * A185889 A185890 A185891

Keyword

nonn

Author

R. H. Hardin, Feb 05 2011

Status

approved