Number of rooted identity trees with n nodes and 4-colored non-root nodes.
A052772
Number of rooted identity trees with n nodes and 4-colored non-root nodes.
Terms
- a(0) =0a(1) =1a(2) =4a(3) =22a(4) =156a(5) =1193a(6) =9748a(7) =82916a(8) =727088a(9) =6524084a(10) =59620732a(11) =552970626a(12) =5191935808a(13) =49252903050a(14) =471358286352
External references
- oeis: A052772