Number of unlabeled hyperforests spanning n vertices with singleton edges allowed.
A304977
Number of unlabeled hyperforests spanning n vertices with singleton edges allowed.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =14a(4) =55a(5) =235a(6) =1112a(7) =5672a(8) =30783a(9) =175733a(10) =1042812a(11) =6385278a(12) =40093375a(13) =257031667a(14) =1676581863a(15) =11098295287a(16) =74401300872a(17) =504290610004
External references
- oeis: A304977