One quarter of the number of n X n nonnegative integer arrays with every 2 X 2 subblock summing to 3.
A145013
One quarter of the number of n X n nonnegative integer arrays with every 2 X 2 subblock summing to 3.
Terms
- a(0) =5a(1) =26a(2) =79a(3) =293a(4) =779a(5) =2555a(6) =6475a(7) =20111a(8) =50195a(9) =151991
External references
- oeis: A145013