Number of permutations of n copies of 1..5 introduced in order 1..5 with no element equal to another within a distance of 1.
A190920
Number of permutations of n copies of 1..5 introduced in order 1..5 with no element equal to another within a distance of 1.
Terms
- a(0) =1a(1) =329a(2) =163386a(3) =98371884a(4) =66218360625
External references
- oeis: A190920