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What row of numbers comes next? 1 11 21 1211 111221 312211 13112221
The next row is 1113213211. Why? Simple. Every row describes the previous one. 1 1 One - 11 2 One(s) - 21 1 Two 1 One - 1211 1 One 1 Two 2 One(s) - 111221 etc.
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