L      direct L^6[j(L-1)/L-j(L)^2]   interval main+corr enclosure            inside?
   43       1.42719714527136277   [1.42681359035795639, 1.42763332303716245]  True
   50       1.35213505969922928   [1.35212506857482433, 1.35214719913453046]  True
   80       1.20080710572486174   [1.20080700507101089, 1.20080723965198631]  True
  103        1.1510204777413862   [1.15102046825778824, 1.15102049069910503]  True
  150       1.10022584177168142   [1.10022584147798283, 1.10022584218476767]  True
  300       1.04833186277281223   [1.04833186277229141, 1.04833186277356862]  True
  642       1.02216407514229663   [1.02216407514229611, 1.02216407514229741]  True
 1000       1.01414642613207933   [1.01414642613207932, 1.01414642613207934]  True
 3158       1.00444776984308327   [1.00444776984308327, 1.00444776984308327]  True
heuristic crossover for eps(600,700): 643.28186