What is the f'th term of 109, 245, 381?
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What is the p'th term of -208, -415, -622, -829?
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What is the w'th term of 47, 102, 163, 230, 303, 382?
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What is the a'th term of 20, 40, 66, 104, 160, 240?
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What is the j'th term of -19, -45, -77, -115, -159, -209?
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What is the p'th term of -78, -106, -124, -126, -106, -58, 24, 146?
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What is the i'th term of -198, -363, -528, -693?
一个美术生