Number of ways to partition n labeled elements into pie slices of at least 2 elements allowing the pie to be turned over.

A032265

Number of ways to partition n labeled elements into pie slices of at least 2 elements allowing the pie to be turned over.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =1a(4) =4a(5) =11a(6) =41a(7) =162a(8) =925a(9) =5945a(10) =47017a(11) =402788a(12) =3895937a(13) =40556595a(14) =461544253a(15) =5625446270a(16) =73716523405

External references