Number of series reduced trees with n nodes and integer labeled leaves covering an initial interval of positive integers.
A339648
Number of series reduced trees with n nodes and integer labeled leaves covering an initial interval of positive integers.
Terms
- a(0) =1a(1) =0a(2) =2a(3) =4a(4) =16a(5) =62a(6) =290a(7) =1496a(8) =8548a(9) =53278a(10) =359076a(11) =2597052a(12) =20034252a(13) =163996372a(14) =1418326160a(15) =12911494594a(16) =123317867572
External references
- oeis: A339648