The numbers 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 17, etc. are not perfect squares. Write a function to list the nth term in this sequence. Check the test suite to see which functions are banned for this problem. For background music while solving this problem, you can listen to Dave Brubeck’s Unsquare Dance.
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Last Solution submitted on Dec 27, 2025

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Pauli Huusari Riccardo G. Mehdi Dehghan Hong Son

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