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Re:Anime fans stumbled upon a mathematical proof by OscarCunningham on Thursday March 06, 2025 @02:53PM (#43284432)
If the code is allowed repeats then the problem is much easier: https://en.wikipedia.org/wiki/De_Bruijn_sequence.
Re:Anime fans stumbled upon a mathematical proof by Out_of_Characte on Thursday March 06, 2025 @05:02PM (#43285497)
Superpermutation must repeat all possible combination in the shortest number possible. De Bruijn sequence places a lower bound on the length of superpermutations but shorter sequences are possible. De bruijn is also cyclical, which superpermutations in the literature are not.