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A205619 Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock in a row having an equal number of equal diagonal or equal antidiagonal elements, adjacent rows differing in this number, and new values 0..2 introduced in row major order 0
14, 306, 13068, 1103436, 188139156, 63787803360, 44843430265344, 60947906705204832 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A205626

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A276699 A258491 A251220 * A034912 A250966 A213466

Adjacent sequences:  A205616 A205617 A205618 * A205620 A205621 A205622

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 29 2012

STATUS

approved

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Last modified August 12 04:52 EDT 2022. Contains 356067 sequences. (Running on oeis4.)