A187423 - OEIS

A187423

Number of (n+1)X6 0..2 arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants

15055, 319792, 5254072, 139898890, 2868461180, 72355701549

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 5 of A187425

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for 3X6

..1..0..2..2..0..0....1..0..1..2..0..0....1..1..1..0..1..0....0..2..2..2..0..0

..2..0..0..1..1..0....1..0..1..1..0..2....0..0..1..1..2..1....0..0..1..2..0..0

..2..0..2..2..0..0....0..0..1..0..0..2....1..0..2..1..1..1....0..1..1..1..0..1

CROSSREFS

Sequence in context: A254581 A254588 A254356 * A186215 A347077 A257017

Adjacent sequences: A187420 A187421 A187422 * A187424 A187425 A187426

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 09 2011

STATUS

approved