n=33: 192 reachable points of length <= 20, 45 classes of parallel directions
  class of alpha=0.087855: floating billiard finds 16 of the 16 (length, factor) pairs of the unfolding, none else
  class of alpha=0.179160: floating billiard finds 16 of the 16 (length, factor) pairs of the unfolding, none else
  class of alpha=0.170290: floating billiard finds 16 of the 16 (length, factor) pairs of the unfolding, none else
  class of alpha=0.338168: floating billiard finds 16 of the 16 (length, factor) pairs of the unfolding, none else
bands computed: 5518 (rays from O, both sides); largest number of segments of a simple preclosed piece: 50
odd n: in every class exactly m = 16 preclosed lengths c*lambda*sin(2j pi/n)/sin(pi/n), factors d_j = n'/gcd(n',j); classes by n': {33: 31, 11: 9, 3: 5}
  n'=33: factors 33,33,11,33,33,11,33,33,11,33,3,11,33,33,11,33  gcd 1  a quotient is n: yes  classes: 31
  n'=11: factors 11,11,11,11,11,11,11,11,11,11,1,11,11,11,11,11  gcd 1  a quotient is n: no  classes: 9
  n'=3: factors 3,3,1,3,3,1,3,3,1,3,3,1,3,3,1,3  gcd 1  a quotient is n: no  classes: 5
DONE n=33 [7.3s]
