Number of nX7 0..2 arrays with new values 0..2 introduced in row major order and no element equal to any horizontal or vertical neighbor (colorings ignoring permutations of colors).
A207996
Number of nX7 0..2 arrays with new values 0..2 introduced in row major order and no element equal to any horizontal or vertical neighbor (colorings ignoring permutations of colors).
Terms
- a(0) =32a(1) =729a(2) =17749a(3) =441090a(4) =11045757a(5) =277458045a(6) =6978332618a(7) =175605187731
External references
- oeis: A207996