[Tom Line]

I believe this is against the spirit of the rules, and therefore I will not be pursuing it. However,

What is stop you from treating one of the buttons as an enter button? For instance, say you are using 1, 2, 3, and 4. In that case, you could press 1, then 2 then 4 (enter), and the robot would do whatever "12" tells it to. This gives you 9 combinations. Or, if you'd like the robot just to pause for 2 seconds while you enter it and get rid of the "enter" button, you could have sequences like 1-3-2-4-2.

Take that a step further and pick up a programmable remote with LCD screen from radio shack. These allow a single button press to send out multiple signals. You could program one to completely control your robot.

Again - I'm not pursuing this. But it is something we discussed until we decided it was against the spirit of what First meant the rule to mean.