 | ECS #1017: Constant sequence |
| Introduction | Examples | Search | Submit | Help | Links |
1. Description
All 9's
2. Specification
This unlabelled structure is specified as S in
\displaystyle
\left\{ S={\rm Prod} \left( {\rm Union} \left( Z,Z,Z,Z,Z,Z,Z,Z,Z
\right) ,{\rm Sequence} \left( Z \right) \right) \right\}
other formats
3. Coefficients
3.1. First terms
3.2. Recurrence
\displaystyle
\left\{ -f \left( n \right) +9=0,f \left( 0 \right) =0,f \left( 1
\right) =9 \right\}
other formats
3.3. Closed form
\displaystyle
9+\cases{-9&$n=0$\cr 0&otherwise\cr}
other formats
3.4. Asymptotics
4. Ordinary generating function
\displaystyle
-9\,{\frac {x}{-1+x}}
other formats
5. References
6. Random structure
Search a combinatorial structure by: (firstTerms should be a sequence of integers, separated by commas).