1/24 the number of (n+1)X6 0..3 arrays with every 2X2 subblock containing exactly three distinct values.
A183590
1/24 the number of (n+1)X6 0..3 arrays with every 2X2 subblock containing exactly three distinct values.
Terms
- a(0) =44896a(1) =13311808a(2) =3887550226
External references
- oeis: A183590