A186531 Number of (n+1)X5 0..2 arrays with no 2X2 subblock determinant equal to any horizontal or vertical neighbor 2X2 subblock determinant

28522, 2004390, 150041994, 11180777496, 819481009820, 60763226187367, 4470558553054728, 330651060182605074, 24366494030348841656, 1800209299030291069455, 132764213014156819442034

Offset

1,1

Comments

Column 4 of A186536

Links

R. H. Hardin, Table of n, a(n) for n = 1..180

Example

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

Crossrefs

Sequence in context: A231417 A145683 A205890 * A253837 A253844 A253931

Adjacent sequences: A186528 A186529 A186530 * A186532 A186533 A186534

Keyword

nonn

Author

R. H. Hardin Feb 23 2011

Status

approved