--- a/progs/collatz_sol.scala	Fri Nov 18 18:47:50 2016 +0000
+++ b/progs/collatz_sol.scala	Mon Nov 21 19:23:37 2016 +0000
@@ -36,7 +36,7 @@
 
 
 // some testing harness
-val bnds = List(10, 100, 1000, 10000, 100000, 1000000)
+val bnds = List(2, 10, 100, 1000, 10000, 100000, 77000, 90000, 1000000)
 
 for (bnd <- bnds) {
   val (max, steps) = collatz_max(bnd)