View full lesson: http://ed.ted.com/lessons/can-you-find-the-next-number-in-this-sequence-alex-gendler
1, 11, 21, 1211, 111221. These are the first five elements of a number sequence. Can you figure out what comes next? Alex Gendler reveals the answer and explains how beyond just being a neat puzzle, this type of sequence has practical applications as well.
Lesson by Alex Gendler, animation by Artrake Studio.
Tagged under: TED,TED-Ed,TED Education,TED Ed,Alex Gendler,Artrake Studio, sequence,number sequence,pattern,John Conway,Conway' constant,elements,digits,puzzle,run-length encoding
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