What is the i'th term of 1, -23, -85, -203, -395, -679?
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What is the t'th term of -20, -17, -14, -11?
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What is the a'th term of -5650, -11300, -16948, -22594, -28238, -33880, -39520?
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What is the u'th term of 186, 188, 192, 198, 206, 216, 228?
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What is the t'th term of 90, 168, 244, 318, 390, 460, 528?
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What is the m'th term of 257, 259, 261, 263, 265?
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What is the t'th term of -92, -87, -78, -65, -48?
一个美术生