User blog comment:Edwin Shade/Just How Many Combinations Are There In A Rubik's Cube ?/@comment-25337554-20171027074054/@comment-80.98.179.160-20180120191459

Let X0=number of possible combinations of 3^3 3-cube.

Let Xn+1=number of possible combinations of Xn^Xn Xn-cube.

Let  Y0=XX ... X 9 , with X9+1 Xs.

Let Yn+1=XX ... X Y n  , with Yn Ys.

Calculate YY 9999.