Number of covers of an unlabeled n-set such that every point of the set is covered by exactly 3 subsets of the cover and that intersection of every 3 subsets of the cover contains at most one point.
A058790
Number of covers of an unlabeled n-set such that every point of the set is covered by exactly 3 subsets of the cover and that intersection of every 3 subsets of the cover contains at most one point.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =66a(4) =445a(5) =4279a(6) =53340a(7) =846254a(8) =16333946a(9) =371976963a(10) =9763321109a(11) =290473143807
External references
- oeis: A058790