A sequence is called an infinitive sequence if, for every , for infinitely many . Write for the th index for which . Then as and range through , the array , called the associative array of , ranges through all of .
Associative Array
See also
Fractal Sequence, Infinitive SequenceExplore with Wolfram|Alpha
References
Kimberling, C. "Fractal Sequences and Interspersions." Ars Combin. 45, 157-168, 1997.Referenced on Wolfram|Alpha
Associative ArrayCite this as:
Weisstein, Eric W. "Associative Array." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/AssociativeArray.html