Number of n X 3 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor.
A221082
Number of n X 3 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor.
Terms
- a(0) =2a(1) =24a(2) =270a(3) =3024a(4) =33858a(5) =379080a(6) =4244238a(7) =47519136a(8) =532031490a(9) =5956705656a(10) =66692184462a(11) =746695862640
External references
- oeis: A221082