What is the r'th term of 1, 15, 27, 37?
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What is the h'th term of -379, -381, -383, -385?
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What is the m'th term of -15, -5, 25, 87, 193, 355, 585, 895?
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What is the h'th term of -279, -293, -311, -333, -359?
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What is the p'th term of 30, 239, 798, 1881, 3662, 6315?
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What is the y'th term of -21, -24, -27?
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What is the x'th term of -364, -736, -1118, -1516, -1936?
一个美术生