A210044 Number of (n+1)X(n+1) 0..2 arrays containing all values 0..2 with every 2X2 subblock having two distinct values, and new values 0..2 introduced in row major order

0, 119, 20871, 8989701, 11175987745, 42412428208163, 503253512833068071, 18932450647021933023425, 2277047483224817482244026729, 880611215077918756189911925544659

Offset

1,2

Comments

Diagonal of A210052

Links

Table of n, a(n) for n=1..10.

Example

Some solutions for n=4
..0..1..1..2..2....0..1..1..2..0....0..1..1..2..1....0..0..0..0..1
..1..0..1..1..2....1..0..1..2..2....1..0..1..1..1....0..1..0..1..0
..1..1..0..1..2....0..0..1..2..0....0..1..0..0..1....0..0..0..0..1
..0..1..1..1..2....0..1..1..2..2....0..1..0..1..1....1..1..0..1..0
..0..1..2..2..2....0..0..1..1..2....1..1..0..0..1....2..1..0..1..1

Crossrefs

Sequence in context: A261686 A069328 A184330 * A020546 A323318 A192726

Adjacent sequences: A210041 A210042 A210043 * A210045 A210046 A210047

Keyword

nonn

Author

R. H. Hardin Mar 16 2012

Status

approved