A183801 1/4 the number of (n+1)X9 0..3 arrays with no 2X2 subblock having sum 6

3924240130, 247844696877249, 15502344363749910194, 971543622805762575749749, 60861648410395945188375656659, 3813006321741956987579568546477519

Offset

1,1

Comments

Column 8 of A183802

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for 3X9
..0..0..0..0..0..0..3..3..2....0..0..0..0..0..0..2..0..1
..0..0..0..0..0..0..2..3..2....0..0..0..0..0..0..2..3..1
..0..0..0..0..0..0..3..0..0....0..0..0..0..0..0..0..0..1

Crossrefs

Sequence in context: A159463 A034615 A022261 * A034647 A234385 A173255

Adjacent sequences: A183798 A183799 A183800 * A183802 A183803 A183804

Keyword

nonn

Author

R. H. Hardin Jan 07 2011

Status

approved