What is the c'th term of 20, 90, 214, 398, 648?
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What is the t'th term of -22, -14, -6?
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What is the z'th term of -14886, -14880, -14870, -14856, -14838, -14816, -14790?
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What is the h'th term of -271, -511, -753, -997, -1243, -1491, -1741?
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What is the f'th term of -135, -547, -1233, -2193, -3427, -4935?
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What is the k'th term of 163, 168, 175, 184, 195, 208?
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What is the t'th term of -1008, -1023, -1054, -1107, -1188?
一个美术生