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A229503 Number of defective 3-colorings of an n X n 0..2 array connected diagonally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..2 order 0
0, 6, 480, 50112, 9854784, 4032737280, 3594819388032, 7178082866740800, 32598674667546519744, 340101114114677727107520, 8206049057729134245814363392 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A229510

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A080295 A084108 A269761 * A318634 A006713 A248362

Adjacent sequences:  A229500 A229501 A229502 * A229504 A229505 A229506

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 25 2013

STATUS

approved

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Last modified October 1 17:45 EDT 2020. Contains 337444 sequences. (Running on oeis4.)