Number of (n+1)X5 0..3 arrays with every 2X2 subblock having one, two or four distinct values, and new values 0..3 introduced in row major order.
A210057
Number of (n+1)X5 0..3 arrays with every 2X2 subblock having one, two or four distinct values, and new values 0..3 introduced in row major order.
Terms
- a(0) =2187a(1) =124097a(2) =7293673a(3) =438056462a(4) =26586250017
External references
- oeis: A210057