Number of 4-element intersecting families of an n-element set.

A051181

Number of 4-element intersecting families of an n-element set.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =4a(4) =365a(5) =11770a(6) =278455a(7) =5715094a(8) =108498285a(9) =1963243930a(10) =34404675635a(11) =589459538734

External references