Number of minimal covers of an n-set that have exactly one point which appears in more than one set in the cover.
A003466
Number of minimal covers of an n-set that have exactly one point which appears in more than one set in the cover.
Terms
- a(0) =0a(1) =3a(2) =28a(3) =210a(4) =1506a(5) =10871a(6) =80592a(7) =618939a(8) =4942070a(9) =41076508a(10) =355372524a(11) =3198027157a(12) =29905143464a(13) =290243182755
External references
- oeis: A003466