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

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