The logic of the sequence is hidden in plain sight
In short: Most people look for a mathematical formula to solve this sequence, but the answer lies in how you describe it. This video explores a famous numerical puzzle that demonstrates how patterns can be encoded in language rather than just arithmetic.
The sequence 1, 11, 21, 1211, 111221 is known as the Look-and-Say sequence. To find the next number, you must read the previous number aloud to describe its digits. For example, '1' is read as 'one 1' (11), and '11' is read as 'two 1s' (21).
Alex Gendler explains that while these puzzles are entertaining, they also have practical applications in mathematics and computer science. The video moves beyond the simple riddle to show how these patterns function as a unique way of representing information.
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Sources
- Summary by Intellect · source: Can you find the next number in this sequence? - Alex Gendler
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