Number of (n+1)X(n+1) 0..2 arrays with the minimum plus the upper median equal to the lower median plus the maximum in every 2X2 subblock.
A235876
Number of (n+1)X(n+1) 0..2 arrays with the minimum plus the upper median equal to the lower median plus the maximum in every 2X2 subblock.
Terms
- a(0) =21a(1) =105a(2) =453a(3) =1833a(4) =7221a(5) =28185a(6) =109893a(7) =429513a(8) =1684821a(9) =6633465a(10) =26204133a(11) =103802793a(12) =412120821a(13) =1639113945
External references
- oeis: A235876