1/4 the number of n X 5 0..3 arrays with no element equal both to the element above and to the element to its left.
A185563
1/4 the number of n X 5 0..3 arrays with no element equal both to the element above and to the element to its left.
Terms
- a(0) =256a(1) =202500a(2) =159749820a(3) =126017211780
External references
- oeis: A185563