Number of n 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.
A221383
Number of n 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) =1198a(4) =1829388a(5) =23796035743
External references
- oeis: A221383