User blog comment:Nayuta Ito/generalization of arrow notation/@comment-4224897-20141025134700/@comment-4224897-20141025135307

and another:

3{1}3 = 27

3{1.1}3

= 3{.1}3{.1}3

= 3{.1}(3^3^.1*3^.9)

= 3{.1}9.16083832

= 3^9.16083832^.1*9.16083832^.9

= 28.91746