One-third of the number of n X n nonnegative integer arrays with every 3 X 3 subblock summing to 3.
A145054
One-third of the number of n X n nonnegative integer arrays with every 3 X 3 subblock summing to 3.
Terms
- a(0) =55a(1) =475a(2) =1807a(3) =4627a(4) =22075a(5) =67603a(6) =156763a(7) =647467
External references
- oeis: A145054