A205764 Number of (n+1)X5 0..3 arrays with every 2X2 subblock having nonzero determinant and having the same number of clockwise edge increases as its horizontal and vertical neighbors.

62607, 4570761, 375857889, 31592825608, 2656185934184, 223459321298323, 18792440902201504, 1580709916943096718, 132941278791630619177, 11181607234258635896108, 940424480216599337378896

Offset

1,1

Comments

Column 4 of A205768

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for 5X5
..2..1..0..1..0....2..2..3..0..2....1..3..3..0..3....3..3..2..1..3
..1..2..1..2..1....0..3..2..2..1....2..2..3..3..3....2..3..3..3..3
..1..0..2..1..0....3..2..0..3..2....0..2..2..3..0....2..2..3..1..3
..0..1..0..3..1....0..3..1..0..3....2..2..3..3..3....2..3..3..3..3
..2..2..1..0..3....1..0..2..1..0....2..3..3..1..3....3..3..0..2..3

Crossrefs

Sequence in context: A257150 A257157 A254739 * A209207 A224649 A253854

Adjacent sequences: A205761 A205762 A205763 * A205765 A205766 A205767

Keyword

nonn

Author

R. H. Hardin, Jan 30 2012

Status

approved