Number of rooted identity trees with n nodes and 3-colored non-root nodes.
A052757
Number of rooted identity trees with n nodes and 3-colored non-root nodes.
Terms
- a(0) =0a(1) =1a(2) =3a(3) =12a(4) =64a(5) =363a(6) =2214a(7) =14043a(8) =91857a(9) =614676a(10) =4189254a(11) =28974915a(12) =202870938a(13) =1435094800a(14) =10241197917a(15) =73639001172a(16) =533004547453
External references
- oeis: A052757