Number of semi-lone-child-avoiding locally disjoint rooted trees with n vertices.
A331872
Number of semi-lone-child-avoiding locally disjoint rooted trees with n vertices.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =6a(6) =12a(7) =19a(8) =35a(9) =59a(10) =104a(11) =179a(12) =318a(13) =556a(14) =993a(15) =1772a(16) =3202a(17) =5807a(18) =10643a(19) =19594a(20) =36380a(21) =67915
External references
- oeis: A331872