Number of 3-ascent sequences of length n with no consecutive repeated letters.
A263853
Number of 3-ascent sequences of length n with no consecutive repeated letters.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =12a(4) =54a(5) =276a(6) =1574a(7) =9916a(8) =68394a(9) =512671a(10) =4150148a(11) =36086135a(12) =335447341a(13) =3319876281a(14) =34853551700a(15) =386889999296
External references
- oeis: A263853