Number of nX4 1..4 arrays with no element with value z exactly a city block distance of z from another element with value z.
A210784
Number of nX4 1..4 arrays with no element with value z exactly a city block distance of z from another element with value z.
Terms
- a(0) =170a(1) =8824a(2) =142627a(3) =1115472a(4) =8039420a(5) =69751928a(6) =890122678a(7) =13542249784a(8) =192792997988
External references
- oeis: A210784