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A210099 Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having one or three distinct values, and new values 0..2 introduced in row major order 0
7, 225, 20687, 5115121, 3382058727, 5991606341393, 28434309064956831, 361537376127800203809, 12315682423794584564506503, 1123977764293133379867078361409 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A210107

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A138247 A322709 A015506 * A193503 A303533 A142606

Adjacent sequences:  A210096 A210097 A210098 * A210100 A210101 A210102

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 17 2012

STATUS

approved

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Last modified May 28 01:34 EDT 2020. Contains 334671 sequences. (Running on oeis4.)