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A239529 Number of (n+1)X(n+1) 0..2 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..2 introduced in row major order 0
1, 2, 216, 11108, 7199001, 6976042240, 39351464058085, 559043719368109528 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A239537

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A078280 A125058 A202741 * A101393 A124188 A261936

Adjacent sequences:  A239526 A239527 A239528 * A239530 A239531 A239532

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 21 2014

STATUS

approved

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Last modified September 21 13:37 EDT 2019. Contains 327253 sequences. (Running on oeis4.)