Number of n X n 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.
A302075
Number of n X n 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =5a(2) =33a(3) =265a(4) =3048a(5) =124046a(6) =8320747a(7) =745344973a(8) =120905954176
External references
- oeis: A302075