One-third of the number of n X n nonnegative integer arrays with every 3 X 3 subblock summing to 2.
A145053
One-third of the number of n X n nonnegative integer arrays with every 3 X 3 subblock summing to 2.
Terms
- a(0) =15a(1) =71a(2) =175a(3) =327a(4) =987a(5) =2079a(6) =3603a(7) =9831a(8) =19947a(9) =33951a(10) =89787a(11) =180615
External references
- oeis: A145053