Number of ways to partition n elements into pie slices each with at least 2 elements allowing the pie to be turned over.
A032278
Number of ways to partition n elements into pie slices each with at least 2 elements allowing the pie to be turned over.
Terms
- a(0) =0a(1) =1a(2) =1a(3) =2a(4) =2a(5) =4a(6) =4a(7) =7a(8) =8a(9) =13a(10) =15a(11) =25a(12) =30a(13) =48a(14) =63a(15) =98a(16) =132a(17) =208a(18) =290a(19) =454a(20) =656a(21) =1021a(22) =1509a(23) =2358a(24) =3544a(25) =5535a(26) =8441a(27) =13200a(28) =20318a(29) =31835
External references
- oeis: A032278