Sum over all partitions of [n] of the number of blocks containing their own index.
A350589
Sum over all partitions of [n] of the number of blocks containing their own index.
Terms
- a(0) =0a(1) =1a(2) =3a(3) =9a(4) =30a(5) =112a(6) =464a(7) =2109a(8) =10411a(9) =55351a(10) =314772a(11) =1903878a(12) =12189432a(13) =82274309a(14) =583389847a(15) =4332513061a(16) =33607736990a(17) =271657081128
External references
- oeis: A350589