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

A229668

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

Terms

    a(0) =3a(1) =652a(2) =19805a(3) =328160a(4) =4331928a(5) =50919512a(6) =557478448a(7) =5814322288a(8) =58526242224a(9) =573293485312

External references