https://en.wikipedia.org/wiki/Superpermutation?wprov=sfla1>In September 2011, an anonymous poster on the Science & Math ("/sci/") board of 4chan proved that the smallest superpermutation on n symbols (n ≥ 2) has at least length n! + (n−1)! + (n−2)! + n − 3.
And what have you done In your time posting here?