Number of sequences with 5 copies each of 1,2,...,n avoiding the pattern 12...n.
A269115
Number of sequences with 5 copies each of 1,2,...,n avoiding the pattern 12...n.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =26945a(4) =1474050783
External references
- oeis: A269115