a(n) is the number of weak ascent sequences (of any length) with n weak ascents.

A369322

a(n) is the number of weak ascent sequences (of any length) with n weak ascents.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =20a(4) =285a(5) =8498a(6) =521549a(7) =65149296a(8) =16446593964

External references