A229599 Number of defective 3-colorings of an n X n 0..2 array connected horizontally and vertically with exactly two mistakes, and colors introduced in row-major 0..2 order.

0, 6, 396, 35182, 5655616, 1840258874, 1279020266434, 1956482857537638, 6709261067536603464, 52210936089708881164828, 929873887535519786302080272, 38136664055521875662056947040494

Offset

1,2

Comments

Diagonal of A229606.

Links

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

Example

Some solutions for n=3:
  0 1 1   0 0 1   0 1 0   0 1 0   0 1 0   0 1 1   0 1 2
  1 0 0   1 1 2   0 2 1   1 2 2   0 2 2   0 2 0   2 2 1
  2 1 2   0 2 1   0 1 2   0 2 0   1 0 1   1 0 1   2 0 2

Crossrefs

Cf. A229606.

Sequence in context: A338115 A283228 A278322 * A290324 A306887 A289894

Adjacent sequences: A229596 A229597 A229598 * A229600 A229601 A229602

Keyword

nonn

Author

R. H. Hardin, Sep 26 2013

Status

approved