A185890 1/729 the number of (n+2)X10 0..2 arrays with no 3X3 subblock trace equal to any horizontal or vertical neighbor 3X3 subblock trace

65222436072, 375382835991994, 2533647121080969994, 16763506421271197917026, 110380142237960121367785334, 734238018212525212675553891544, 4897346164996077080858914174276614

Offset

1,1

Comments

Column 8 of A185891

Links

Table of n, a(n) for n=1..7.

Example

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

Crossrefs

Sequence in context: A216020 A250866 A185188 * A352987 A344667 A186610

Adjacent sequences: A185887 A185888 A185889 * A185891 A185892 A185893

Keyword

nonn

Author

R. H. Hardin Feb 05 2011

Status

approved