 | ECS #2: Necklaces of 2 colours |
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1. Description
- Necklaces of 2 colours
- binary irreducible polynomials whose degree divides n
2. Specification
This unlabelled structure is specified as S in
\displaystyle
\left\{ S={\rm Cycle} \left( {\rm Union} \left( {\rm c1},{\rm c2}
\right) \right) ,{\rm c1}={\rm Atom},{\rm c2}={\rm Atom} \right\}
other formats
3. Coefficients
3.1. First terms
4. Ordinary generating function
\displaystyle
\sum _{j_{{1}}=1}^{\infty }{\rm phi} \left( j_{{1}} \right) \ln
\left( - \left( -1+2\,{x}^{j_{{1}}} \right) ^{-1} \right) {j_{{1}}}^{-
1}
other formats
5. References
6. Random structure
Search a combinatorial structure by: (firstTerms should be a sequence of integers, separated by commas).