Number of (n+1)X6 0..2 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces.
A187136
Number of (n+1)X6 0..2 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces.
Terms
- a(0) =12609a(1) =1853892a(2) =99203418a(3) =7020258336a(4) =440941355208
External references
- oeis: A187136