Number of ways to partition n labeled elements into pie slices of different odd sizes, allowing the pie to be turned over.
A032220
Number of ways to partition n labeled elements into pie slices of different odd sizes, allowing the pie to be turned over.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =1a(4) =4a(5) =1a(6) =6a(7) =1a(8) =64a(9) =505a(10) =130a(11) =1321a(12) =1024a(13) =13157a(14) =2380a(15) =395851a(16) =17313664a(17) =1639617a(18) =73554666a(19) =16100905a(20) =919339264a(21) =292018525a(22) =18910614580a(23) =1549052715
External references
- oeis: A032220