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A222394 Number of n X n 0..2 arrays with exactly floor(n X n/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..2 order 0
1, 0, 4, 162, 4644, 1732004, 506779353, 1649738877643 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Diagonal of A222402

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A248330 A157463 A041779 * A306350 A125532 A229405

Adjacent sequences:  A222391 A222392 A222393 * A222395 A222396 A222397

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 18 2013

STATUS

approved

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Last modified September 25 04:20 EDT 2021. Contains 347652 sequences. (Running on oeis4.)