What is the u'th term of 19, 17, 21, 31, 47?
上一篇：
What is the k'th term of -142, -157, -190, -247, -334, -457, -622?
下一篇：
What is the i'th term of 28, 59, 104, 157, 212?
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What is the k'th term of -142, -157, -190, -247, -334, -457, -622?
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What is the y'th term of -3, -15, -29, -39, -39, -23, 15?
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What is the c'th term of -133, -542, -1225, -2182, -3413?
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What is the i'th term of 28, 59, 104, 157, 212?
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What is the i'th term of 5, 6, 5, 2, -3?
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What is the v'th term of -40, -76, -112, -148?
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