Number of (n+1) X 2 0..3 arrays with every 2 X 2 subblock having the same number of equal edges, and new values 0..3 introduced in row major order.
A205433
Number of (n+1) X 2 0..3 arrays with every 2 X 2 subblock having the same number of equal edges, and new values 0..3 introduced in row major order.
Terms
- a(0) =15a(1) =77a(2) =443a(3) =2705a(4) =16955a(5) =108173a(6) =698747a(7) =4558985a(8) =29999531a(9) =198898277a(10) =1327629707a(11) =8915678561a(12) =60198810395a(13) =408431259197
External references
- oeis: A205433