Number of (n+1)X(1+1) 0..3 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.
A237931
Number of (n+1)X(1+1) 0..3 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) =256a(1) =1718a(2) =11701a(3) =81402a(4) =563166a(5) =3880918a(6) =26804881a(7) =185489824a(8) =1282099556a(9) =8852862392a(10) =61169759404a(11) =422870170848
External references
- oeis: A237931