Number of nX7 0..3 arrays with values 0..3 introduced in row major order and no element equal to any horizontal or vertical neighbor.
A198714
Number of nX7 0..3 arrays with values 0..3 introduced in row major order and no element equal to any horizontal or vertical neighbor.
Terms
- a(0) =122a(1) =58825a(2) =28609241a(3) =13925032958
External references
- oeis: A198714