BobB writes "St. Louis University researchers have concocted batteries fueled by almost any kind of sugar, from tree sap to flat soda, and that could be used to power everything from computers to cell phones. Their thinking: If sugar can jack up the human body, why not electronics?"
"I think it is true for all _n. I was just playing it safe with _n >= 3
because I couldn't remember the proof."
-- Baker, Pure Math 351a