Number of 3-element intersecting families whose union is an n-element set.

A053153

Number of 3-element intersecting families whose union is an n-element set.

Terms

    a(0) =0a(1) =0a(2) =13a(3) =170a(4) =1605a(5) =13390a(6) =104993a(7) =794010a(8) =5867245a(9) =42681830a(10) =307120473a(11) =2192847250a(12) =15570312485a(13) =110116458270a(14) =776528783953

External references