A184650 Number of (n+2)X3 0..3 arrays with each 3X3 subblock nonsingular

212898, 11826498, 657272274, 36516002466, 2028771948738, 112716440618754, 6262392708237282, 347931154681020162, 19330646430657483138, 1073988006377144941794, 59669511826707277139106

Offset

1,1

Comments

Column 1 of A184652

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 4X3
..0..0..2....0..0..2....0..0..2....0..0..2....0..0..2....0..0..2....0..0..2
..2..2..0....3..2..2....0..1..1....1..1..0....1..3..2....2..3..2....0..1..1
..0..2..3....1..2..1....1..1..3....1..2..2....3..0..0....1..1..3....1..0..0
..1..2..3....2..1..0....1..2..0....1..1..2....3..1..2....2..0..0....0..2..1

Crossrefs

Sequence in context: A184383 A234829 A184652 * A172643 A172746 A083639

Adjacent sequences: A184647 A184648 A184649 * A184651 A184652 A184653

Keyword

nonn

Author

R. H. Hardin Jan 19 2011

Status

approved