Number of Dyck paths having exactly two peaks in each of the levels 1,...,n and no other peaks.
A289054
Number of Dyck paths having exactly two peaks in each of the levels 1,...,n and no other peaks.
Terms
- a(0) =1a(1) =1a(2) =9a(3) =471a(4) =82899a(5) =36913581a(6) =34878248649
External references
- oeis: A289054