Number of 9-ascent sequences of length n with no consecutive repeated letters.
A264914
Number of 9-ascent sequences of length n with no consecutive repeated letters.
Terms
- a(0) =1a(1) =1a(2) =9a(3) =90a(4) =945a(5) =10440a(6) =121065a(7) =1470855a(8) =18688680a(9) =247924425a(10) =3428559573a(11) =49353455856a(12) =738477897552
External references
- oeis: A264914