What is the a'th term of 158, 156, 150, 140, 126, 108?
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What is the m'th term of 168, 212, 256?
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What is the k'th term of 93, 100, 111, 126, 145, 168?
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What is the d'th term of -24433, -24434, -24435?
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What is the t'th term of 14, -4, -60, -172, -358?
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What is the p'th term of -15, -17, -5, 33, 109, 235?
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What is the a'th term of 18, 28, 40, 54, 70, 88?
一个美术生