Number of n X n 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300532
Number of n X n 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =300a(4) =12951a(5) =1972991a(6) =831752031a(7) =946782030618
External references
- oeis: A300532