Generalized weak orders on n points.

A004122

Generalized weak orders on n points.

Terms

    a(0) =2a(1) =13a(2) =123a(3) =1546a(4) =24283a(5) =457699a(6) =10064848a(7) =252945467a(8) =7151532895a(9) =224661610888

External references