 | ECS #79 |
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1. Description
No description available
2. Specification
This unlabelled structure is specified as S in
\displaystyle
\left\{ B={\rm Union} \left( S,Z \right) ,S={\rm Cycle} \left( B,2
\leq {\rm card} \right) \right\}
other formats
3. Coefficients
3.1. First terms
4. Ordinary generating function
\displaystyle
[B \left( x \right) =S \left( x \right) +x,S \left( x \right) =\sum _{j
_{{1}}=1}^{\infty }{\frac {{\rm phi} \left( j_{{1}} \right) \ln
\left( \left( 1-B \left( {x}^{j_{{1}}} \right) \right) ^{-1}
\right) }{j_{{1}}}}-B \left( x \right) ,Z \left( x \right) =x]
other formats
5. References
6. Random structure
Search a combinatorial structure by: (firstTerms should be a sequence of integers, separated by commas).