Tony Finch
dot@dotat.at
https://dotat.at/
https://dotat.at/:/2ZNJR.html
2018-10-22T21:15:29Z
Superpermutations.
2018‑10‑22
Superpermutations.
http://www.gregegan.net/SCIENCE/Superpermutations/Superpermutations.html
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