User blog comment:Googleaarex/Factorial N-ational/@comment-25371339-20140918003952/@comment-5029411-20140920204436

n!1, 22 = n!1(1(...(1(1(n)2)2)...)2)2/w n 's inside out

n!1(2) 22 = n!1, 21...1,21,22 /w n ,2's

n!1, 32 = n!1(1(...(1(1(n) 22)22)2...)22)22 /w n 2's inside out