n-th derivative of (x^x)^(x^x) at x=1.

Terms

a(0) =1a(1) =1a(2) =4a(3) =18a(4) =100a(5) =650a(6) =4908a(7) =41090a(8) =382520a(9) =3863808a(10) =42409440a(11) =497972112a(12) =6259762320a(13) =83343114504