A184661 Number of (n+2)X4 0..3 arrays with each 3X3 subblock singular

1352770, 119805310, 10047874534, 564143008386, 42151760266070, 3068818942252922, 213876509386388262, 15511761707358612866, 1118945141084512520558, 80408360347124360370778

Offset

1,1

Comments

Column 2 of A184663

Links

R. H. Hardin, Table of n, a(n) for n = 1..45

Example

Some solutions for 5X4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..0....1..0..0..0....2..0..0..0....0..0..0..0....0..0..0..0
..2..0..0..3....1..1..2..0....2..0..0..1....1..1..0..2....1..3..3..0
..2..1..0..0....1..0..0..3....0..3..1..0....3..3..1..3....1..0..2..3

Crossrefs

Sequence in context: A157854 A234727 A067516 * A187961 A120609 A094914

Adjacent sequences: A184658 A184659 A184660 * A184662 A184663 A184664

Keyword

nonn

Author

R. H. Hardin Jan 19 2011

Status

approved