Number of (n+1)X(4+1) 0..3 arrays with the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.
A237918
Number of (n+1)X(4+1) 0..3 arrays with the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.
Terms
- a(0) =63476a(1) =1282504a(2) =27873820a(3) =636891488a(4) =14163256928a(5) =319272033708
External references
- oeis: A237918