Number of 2nX12 0..3 arrays with values 0..3 introduced in row major order and each element equal to exactly two horizontal and vertical neighbors.
A198602
Number of 2nX12 0..3 arrays with values 0..3 introduced in row major order and each element equal to exactly two horizontal and vertical neighbors.
Terms
- a(0) =41a(1) =15761a(2) =6671450a(3) =2934981667
External references
- oeis: A198602