// output of ./demo/perm/perm-invert-notag-demo.cc:
// Description:
//% Inversion of a permutation without extra tag bits.

arg 1: 4 == n  [Array size = 2**n]  default=4
Permutation:
[ 0 13 2 8 14 9 10 7 3 6 15 1 5 11 4 12 ]
Inverse:
[ 0 11 2 8 14 12 9 7 3 5 6 13 15 1 4 10 ]
