Number of ascent sequences of length 2n with n zeros.
A357309
Number of ascent sequences of length 2n with n zeros.
Terms
- a(0) =1a(1) =1a(2) =6a(3) =54a(4) =660a(5) =10255a(6) =193732a(7) =4312980a(8) =110598510a(9) =3210608808a(10) =104085718451
External references
- oeis: A357309