n=25: 285 reachable points of length <= 24, 64 classes of parallel directions
  class of alpha=0.118233: floating billiard finds 12 of the 12 (length, factor) pairs of the unfolding, none else
  class of alpha=0.357002: floating billiard finds 12 of the 12 (length, factor) pairs of the unfolding, none else
  class of alpha=0.035996: floating billiard finds 12 of the 12 (length, factor) pairs of the unfolding, none else
  class of alpha=2.814116: floating billiard finds 12 of the 12 (length, factor) pairs of the unfolding, none else
  class of alpha=2.692348: floating billiard finds 12 of the 12 (length, factor) pairs of the unfolding, none else
  class of alpha=0.321018: floating billiard finds 12 of the 12 (length, factor) pairs of the unfolding, none else
bands computed: 5796 (rays from O, both sides); largest number of segments of a simple preclosed piece: 54
odd n: in every class exactly m = 12 preclosed lengths c*lambda*sin(2j pi/n)/sin(pi/n), factors d_j = n'/gcd(n',j); classes by n': {25: 54, 5: 6, 1: 4}
  n'=25: factors 25,25,25,25,5,25,25,25,25,5,25,25  gcd 5  a quotient is n: no  classes: 54
  n'=5: factors 5,5,5,5,1,5,5,5,5,1,5,5  gcd 1  a quotient is n: no  classes: 6
  n'=1: factors 1,1,1,1,1,1,1,1,1,1,1,1  gcd 1  a quotient is n: no  classes: 4
DONE n=25 [6.6s]
