Number of 2nX10 0..4 arrays with values 0..4 introduced in row major order and each element equal to exactly two horizontal and vertical neighbors.
A198250
Number of 2nX10 0..4 arrays with values 0..4 introduced in row major order and each element equal to exactly two horizontal and vertical neighbors.
Terms
- a(0) =15a(1) =6528a(2) =4059950a(3) =2606019472
External references
- oeis: A198250