Number of nX3 0..7 arrays with values 0..7 introduced in row major order and no element equal to any horizontal or vertical neighbor.
A198909
Number of nX3 0..7 arrays with values 0..7 introduced in row major order and no element equal to any horizontal or vertical neighbor.
Terms
- a(0) =2a(1) =34a(2) =2051a(3) =269940a(4) =54381563a(5) =13088156547
External references
- oeis: A198909