Indices of prime numbers of trees with n unlabeled nodes.
A119642
Indices of prime numbers of trees with n unlabeled nodes.
Terms
- a(0) =4a(1) =5a(2) =7a(3) =8a(4) =9a(5) =13a(6) =15a(7) =52a(8) =82a(9) =134a(10) =216a(11) =341a(12) =538a(13) =1414a(14) =17306a(15) =17582
External references
- oeis: A119642