n=5: 1855 reachable points of length <= 60, 528 classes of parallel directions
  class of alpha=0.668138: floating billiard finds 2 of the 2 (length, factor) pairs of the unfolding, none else
  class of alpha=1.326662: floating billiard finds 2 of the 2 (length, factor) pairs of the unfolding, none else
  class of alpha=0.547766: floating billiard finds 2 of the 2 (length, factor) pairs of the unfolding, none else
  class of alpha=0.154719: floating billiard finds 2 of the 2 (length, factor) pairs of the unfolding, none else
  class of alpha=0.229561: floating billiard finds 2 of the 2 (length, factor) pairs of the unfolding, none else
  class of alpha=0.354626: floating billiard finds 2 of the 2 (length, factor) pairs of the unfolding, none else
  class of alpha=0.339721: floating billiard finds 2 of the 2 (length, factor) pairs of the unfolding, none else
  class of alpha=0.326056: floating billiard finds 2 of the 2 (length, factor) pairs of the unfolding, none else
bands computed: 6324 (rays from O, both sides); largest number of segments of a simple preclosed piece: 148
odd n: in every class exactly m = 2 preclosed lengths c*lambda*sin(2j pi/n)/sin(pi/n), factors d_j = n'/gcd(n',j); classes by n': {5: 437, 1: 91}
  n'=5: factors 5,5  gcd 5  a quotient is n: no  classes: 437
  n'=1: factors 1,1  gcd 1  a quotient is n: no  classes: 91
DONE n=5 [3.6s]
