Number of 4 X n arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no 2-loops and with no occupancy greater than 2.
A221403
Number of 4 X n arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no 2-loops and with no occupancy greater than 2.
Terms
- a(0) =0a(1) =38a(2) =144a(3) =89173a(4) =2294372a(5) =247200529a(6) =10874636860a(7) =776880319370
External references
- oeis: A221403