One-third of the number of n X n nonnegative integer arrays with every 3 X 3 subblock summing to 4.
A145055
One-third of the number of n X n nonnegative integer arrays with every 3 X 3 subblock summing to 4.
Terms
- a(0) =165a(1) =2401a(2) =13757a(3) =48057a(4) =345885a(5) =1519377
External references
- oeis: A145055