 | ECS #96: Non-planar trees |
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1. Description
Non-planar labelled trees with neither unary nor binary nodes
2. Specification
This labelled structure is specified as S in
\displaystyle
\left\{ B={\rm Union} \left( S,Z \right) ,S={\rm Set} \left( B,3\leq {
\rm card} \right) \right\}
other formats
3. Coefficients
3.1. First terms
4. Exponential generating function
\displaystyle
{\rm RootOf} \left( 2\,{{\rm e}^{{\rm \_Z}}}-4\,{\rm \_Z}+2\,x-2-{{\rm
\_Z}}^{2} \right) -x
other formats
5. References
6. Random structure
Search a combinatorial structure by: (firstTerms should be a sequence of integers, separated by commas).