Number of (n+1)X(1+1) 0..2 arrays with the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.
A237861
Number of (n+1)X(1+1) 0..2 arrays with the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.
Terms
- a(0) =81a(1) =336a(2) =1414a(3) =6030a(4) =25525a(5) =107272a(6) =453088a(7) =1919632a(8) =8117752a(9) =34231344a(10) =144659936a(11) =611705384a(12) =2586040156a(13) =10917301088a(14) =46143495072a(15) =194990974880a(16) =824264967728
External references
- oeis: A237861