Number of (n+1)X4 0..3 arrays with every 2X2 subblock having three or four distinct values, and new values 0..3 introduced in row major order.
A210408
Number of (n+1)X4 0..3 arrays with every 2X2 subblock having three or four distinct values, and new values 0..3 introduced in row major order.
Terms
- a(0) =864a(1) =80496a(2) =7380816a(3) =677993552a(4) =62266883792
External references
- oeis: A210408