Number of (n+1)X(4+1) 0..3 arrays with the upper median minus the lower median of every 2X2 subblock equal.
A237535
Number of (n+1)X(4+1) 0..3 arrays with the upper median minus the lower median of every 2X2 subblock equal.
Terms
- a(0) =83104a(1) =4857060a(2) =266120870a(3) =15808900408a(4) =924306101684
External references
- oeis: A237535