A186215 Number of (n+1)X6 0..2 arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant

15055, 2008031, 116461359, 9406230423, 660028898887, 49524283508081, 3611859394076247

Offset

1,1

Comments

Column 5 of A186218

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for 3X6
..0..0..2..0..1..0....0..0..1..0..0..0....0..0..1..1..0..1....0..0..0..1..0..0
..0..0..0..0..0..0....0..0..0..0..0..2....0..0..0..0..0..0....0..0..0..0..0..0
..0..0..0..0..2..2....0..0..2..1..0..2....0..1..1..1..1..0....2..0..2..0..2..1

Crossrefs

Sequence in context: A254588 A254356 A187423 * A347077 A257017 A257014

Adjacent sequences: A186212 A186213 A186214 * A186216 A186217 A186218

Keyword

nonn

Author

R. H. Hardin Feb 15 2011

Status

approved