1/4 the number of nX6 0..3 arrays with no element equal both to the element above and to the element to its left.
A185564
1/4 the number of nX6 0..3 arrays with no element equal both to the element above and to the element to its left.
Terms
- a(0) =1024a(1) =3037500a(2) =8977824540
External references
- oeis: A185564