Number of set partitions of [n] where each subset is again partitioned into six nonempty subsets.
A327507
Number of set partitions of [n] where each subset is again partitioned into six nonempty subsets.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =1a(7) =21a(8) =266a(9) =2646a(10) =22827a(11) =179487a(12) =1324114a(13) =9357348a(14) =64991927a(15) =469882413a(16) =4008715074a(17) =46160063586a(18) =691114045987
External references
- oeis: A327507