Number of 9-block bicoverings of an n-set.
A059950
Number of 9-block bicoverings of an n-set.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =15a(6) =8456a(7) =954213a(8) =66253552a(9) =3622342095a(10) =172672602432
External references
- oeis: A059950
A059950
Number of 9-block bicoverings of an n-set.