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A229579 Number of defective 3-colorings of an n X n 0..2 array connected horizontally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..2 order. 0
0, 6, 264, 19764, 2865780, 890824020, 613195191972, 954838111013352, 3403478388512845692, 27993333042034653078324, 534183142761328458054883788, 23742792574386065523445979163924 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A229586.

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Some solutions for n=3:

0 1 2 0 1 0 0 1 0 0 1 2 0 1 2 0 1 0 0 1 0

0 2 1 2 0 2 1 2 0 2 0 1 0 1 2 2 2 1 2 2 1

1 0 1 2 1 0 1 2 1 2 1 0 0 2 0 1 2 1 1 0 2

CROSSREFS

Cf. A229586.

Sequence in context: A003384 A316393 A332126 * A033289 A244493 A221900

Adjacent sequences: A229576 A229577 A229578 * A229580 A229581 A229582

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 26 2013

STATUS

approved

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Last modified February 3 09:09 EST 2023. Contains 360034 sequences. (Running on oeis4.)