Number of set partitions of [n] where each subset is again partitioned into seven nonempty subsets.
A327508
Number of set partitions of [n] where each subset is again partitioned into seven nonempty subsets.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =1a(8) =28a(9) =462a(10) =5880a(11) =63987a(12) =627396a(13) =5715424a(14) =49330996a(15) =408921513a(16) =3292212924a(17) =26136933186a(18) =211891946448
External references
- oeis: A327508