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In mathematics, a periodic sequence (sometimes called a cycle or orbit) is a sequence for which the same terms are repeated over and over:
- a1, a2, ..., ap, a1, a2, ..., ap, a1, a2, ..., ap, ...
The number p of repeated terms is called the period (period).[1]
- ^ "Ultimately periodic sequence", Encyclopedia of Mathematics, EMS Press, 2001 [1994]