Number of nX4 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, with no 2-loops and with no occupancy greater than 2.
A221359
Number of nX4 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, with no 2-loops and with no occupancy greater than 2.
Terms
- a(0) =0a(1) =292a(2) =18738a(3) =1388784a(4) =93433746a(5) =6308646549a(6) =423812250312
External references
- oeis: A221359