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

A229631

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

Terms

    a(0) =0a(1) =6a(2) =244a(3) =10227a(4) =960325a(5) =170405645a(6) =61836040854

External references