// output of ./demo/gf2n/gf2n-trace0-generators-demo.cc:
// Description:
//% Count primitive elements with trace==0 in GF(2**n)  (OEIS sequences A192211 and A152049).

arg 1: 5 == n  [degree of field (n>=2)]  default=5
     ...1.
     ..1..
     1....
     1.1..
     .11.1
     111.1
     11111
     11.11
     ..11.
     .1111
     11..1
     .1.11
     1.11.
     .1..1
     1..1.
  ct=15