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, 6, 264, 19764, 2865780, 890824020, 613195191972, 954838111013352, 3403478388512845692, 27993333042034653078324, 534183142761328458054883788, 23742792574386065523445979163924

Offset: 1

Author

R. H. Hardin, Sep 26 2013

Keywords

• nonn

Comments

Diagonal of A229586.

Examples

			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.