User blog comment:Boboris02/Large number combinatorics I:COX function/@comment-1605058-20170130220310

Quick question: when you take n symbols and consider COX(n), do you still group the symbols into triples? Or do you consider larger sequences then? (you could use that to make your function two-argument)

Also, what legal sequence of length 12 do you know? I believe the maximum is actually 10, so that COX(2)=11.