Number of 3 X n arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, with no 2-loops and with no occupancy greater than 2.
A221389
Number of 3 X n arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, with no 2-loops and with no occupancy greater than 2.
Terms
- a(0) =0a(1) =0a(2) =4a(3) =94a(4) =1450a(5) =20689a(6) =284702a(7) =3856027a(8) =51806212a(9) =693213401a(10) =9256626752a(11) =123474805622
External references
- oeis: A221389