OFFSET
1,2
COMMENTS
Please refer to A332089 (the main entry, where symbols in each superpermutation are individually listed) for more information.
In this sequence superpermutations are encoded by concatenating the symbols in a single word. Such encoding ensures unambiguous representation only up to n = 9.
LINKS
Michael Engen and Vincent Vatter, Containing All Permutations, The American Mathematical Monthly, 128 (1), 2021, pp. 4-24 (preprint version).
James Grime and Brady Haran, Superpermutations, Numberphile video, 2018.
Nathaniel Johnston, Non-uniqueness of minimal superpermutations, Discrete Mathematics, Vol. 313, Issue 14, 2013, pp. 1553-1557 (preprint version).
Nathaniel Johnston, All Minimal Superpermutations on Five Symbols Have Been Found, 2014.
Wikipedia, Superpermutation.
CROSSREFS
KEYWORD
nonn,hard,fini
AUTHOR
Paolo Xausa, Sep 20 2024
STATUS
approved