Number of ascent sequences of length n with exactly four descents.

A241874

Number of ascent sequences of length n with exactly four descents.

Terms

    a(0) =26a(1) =1048a(2) =21362a(3) =307660a(4) =3574869a(5) =35900857a(6) =324623778a(7) =2713846040a(8) =21359949568a(9) =160346402882

External references