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A Sequence

Level pending

What the next term in the sequence following sequence?

1, 11, 21, 1211, 111221, 312211, 13112221, 1113213211...

12233121312123 1231231213212112 123211321313312 31131211131221

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Excel in math and science

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It's hard to learn from lectures and videos

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Used and loved by over 6 million people

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including olympiad champions, researchers, and professionals.

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by Victor Paes Plinio

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