Total number of sub-subsets of set partitions of [n] where each subset is again partitioned into nonempty subsets.
A325929
Total number of sub-subsets of set partitions of [n] where each subset is again partitioned into nonempty subsets.
Terms
- a(0) =0a(1) =1a(2) =4a(3) =14a(4) =57a(5) =262a(6) =1326a(7) =7499a(8) =47662a(9) =334794a(10) =2555639a(11) =21124116a(12) =189492474a(13) =1838561337a(14) =19094196270a(15) =210014919406
External references
- oeis: A325929