A229503 - OEIS

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, 6, 480, 50112, 9854784, 4032737280, 3594819388032, 7178082866740800, 32598674667546519744, 340101114114677727107520, 8206049057729134245814363392

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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

Cf. A229510.

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