This is the story of all the probabilities of

                       (i) escaping the region y>=b/a*x

          (ii) escaping  y>b/a*x  (except at the beginning, of course)

          with unit steps to the right and up in the discrete lattice

                              each with prob. 1/2

                             starting at the origin

                                for 2<=b<=a<=, 5

             a=, 2, b=, 1, (i)=, 0.6180339887, (ii)=, 0.6909830056

             a=, 3, b=, 1, (i)=, 0.5436890127, (ii)=, 0.5803566224

             a=, 3, b=, 2, (i)=, 0.7481518342, (ii)=, 0.7754441182

             a=, 4, b=, 1, (i)=, 0.5187900637, (ii)=, 0.5362190123

             a=, 4, b=, 3, (i)=, 0.8091410707, (ii)=, 0.8229424412

             a=, 5, b=, 1, (i)=, 0.5086603916, (ii)=, 0.5170258817

             a=, 5, b=, 2, (i)=, 0.5876238826, (ii)=, 0.5996923731

             a=, 5, b=, 3, (i)=, 0.7158769909, (ii)=, 0.7276461121

             a=, 5, b=, 4, (i)=, 0.8453136528, (ii)=, 0.8534748833

                            ------------------------

                          This took, 78.220, seconds.