Number of nX5 0..3 arrays with values 0..3 introduced in row major order and each element equal to one or two horizontal and vertical neighbors.
A199146
Number of nX5 0..3 arrays with values 0..3 introduced in row major order and each element equal to one or two horizontal and vertical neighbors.
Terms
- a(0) =3a(1) =393a(2) =42420a(3) =6235011a(4) =839006010a(5) =117380324984
External references
- oeis: A199146