Number of ballot sequences of length n having exactly six descents.
A241799
Number of ballot sequences of length n having exactly six descents.
Terms
- a(0) =1a(1) =66a(2) =1582a(3) =21895a(4) =215849a(5) =1685957a(6) =11051141a(7) =63115364a(8) =322683730a(9) =1503863212a(10) =6488505684a(11) =26177296409a(12) =99733640537a(13) =361023920432
External references
- oeis: A241799