A certain restricted class of posets on n points.

A230090

A certain restricted class of posets on n points.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =2a(7) =2a(8) =5a(9) =11a(10) =35635

External references