Number of n X 4 0..3 arrays with new values 0..3 introduced in row major order and no element equal to any horizontal, vertical or antidiagonal neighbor (colorings ignoring permutations of colors).
A208046
Number of n X 4 0..3 arrays with new values 0..3 introduced in row major order and no element equal to any horizontal, vertical or antidiagonal neighbor (colorings ignoring permutations of colors).
Terms
- a(0) =5a(1) =32a(2) =244a(3) =1904a(4) =14976a(5) =118096a(6) =931968a(7) =7356288a(8) =58068800a(9) =458389760a(10) =3618506752a(11) =28564366592a(12) =225486229504
External references
- oeis: A208046