3 21j16 ":"1] 3 4 5 6 7 8 20 30 50 100 ([,.{) (,vn)^:100(2 _4x)
  3   9.3783783783783784
  4   7.8011527377521614
  5   7.1544144809752494
  6   6.8067847369236330
  7   6.5926327687044384
  8   6.4494659337902880
 20   6.0360318810818568
 30   6.0056486887714203
 50   6.0001465345613879
100   6.0000000160995649