Number of defective 4-colorings of an n X 6 0..3 array connected horizontally, antidiagonally and vertically with exactly two mistakes, and colors introduced in row-major 0..3 order.

A229670

Number of defective 4-colorings of an n X 6 0..3 array connected horizontally, antidiagonally and vertically with exactly two mistakes, and colors introduced in row-major 0..3 order.

Terms

    a(0) =50a(1) =33152a(2) =1673561a(3) =50919512a(4) =1289285440a(5) =29775277216a(6) =649844491552

External references