Number of set partitions of [n] where each subset is again partitioned into nine nonempty subsets.
A327510
Number of set partitions of [n] where each subset is again partitioned into nine nonempty subsets.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =1a(10) =45a(11) =1155a(12) =22275a(13) =359502a(14) =5135130a(15) =67128490a(16) =820784250a(17) =9528822303a(18) =106175420065
External references
- oeis: A327510