Number of (n+1)X(3+1) 0..3 arrays with the upper median equal to the lower median in every 2X2 subblock.
A235852
Number of (n+1)X(3+1) 0..3 arrays with the upper median equal to the lower median in every 2X2 subblock.
Terms
- a(0) =4524a(1) =121244a(2) =2848572a(3) =73075844a(4) =1811192156a(5) =45872598284
External references
- oeis: A235852