A186961 1/729 the number of (n+2)X10 0..2 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace

582004185, 2546947279751, 4949074316433529, 12152638841787524045, 28454687244738848695377

Offset

1,1

Comments

Column 8 of A186962

Links

Table of n, a(n) for n=1..5.

Example

Some solutions for 4X10
..0..0..0..0..0..0..1..2..2..1....0..0..0..0..0..0..0..1..1..1
..0..0..0..0..0..0..2..1..1..2....0..0..0..0..0..0..2..1..1..1
..0..0..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0..1..0
..0..0..0..0..0..0..0..0..0..2....0..0..0..0..0..0..0..0..1..1

Crossrefs

Sequence in context: A071135 A335561 A303268 * A032755 A234391 A297448

Adjacent sequences: A186958 A186959 A186960 * A186962 A186963 A186964

Keyword

nonn

Author

R. H. Hardin Mar 01 2011

Status

approved