Two numbers are missing in this pattern:

2, 4, 11, 37, 153, ??, ???

What are they?

This is bizarre.  For some reason the solution is incorrect (although it correctly explains the rule), and many of the posted comments are incorrect as well. The next two terms should be 771 and 4633.  Why did so many people come up with 4663?  Were you copying each other's solutions?

Posted by Rebecca Jaffe on 2005-09-02 09:15:12