Given a series of the form
 |
the notation )](https://wwn.ikan3.com/7hz2929k26_9nqeuhigsnjcgsjpnuemse/6waftmuhc/9cmrkxuhlsqa/9nqUsrpplmlrqhSshuhlsq/Inline1.svg)
is used to indicate the coefficient 
(Sedgewick and Flajolet 1996). This corresponds to the Wolfram Language functions Coefficient[A[z],
z, k] and SeriesCoefficient[series,
k].
Coefficient Notation
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References
Sedgewick, R. and Flajolet, P. An Introduction to the Analysis of Algorithms. Reading, MA: Addison-Wesley, 1996.Referenced on Wolfram|Alpha
Coefficient NotationCite this as:
Weisstein, Eric W. "Coefficient Notation." From MathWorld--A Wolfram Web Resource. https://wwn.ikan3.com/7hz2929k26_9nqeuhigsnjcgsjpnuemse/CoefficientNotation.html