User blog comment:Googleaarex/Factorial N-ational/@comment-25371339-20140918003952/@comment-25371339-20140920024418

Continuation:

n!1(1,2)2 ,1,2  = n!1(n)2 ,1,2

n! 1(2,2)2 ,1,2   = n!1(1,2)1(1,2)1(1,2)...(1,2)1(1,2)1(1,2)2 ,1,2  w/ n times

More coming soon!

(sorry, busy)