What is the r'th term of 254, 251, 246, 239, 230, 219, 206?
上一篇：
What is the h'th term of -31, -19, 7, 53, 125, 229, 371?
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What is the i'th term of 0, 34, 118, 276, 532, 910, 1434, 2128?
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What is the h'th term of -31, -19, 7, 53, 125, 229, 371?
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What is the r'th term of 33, 65, 97, 129, 161?
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What is the r'th term of -125, -222, -317, -410, -501?
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What is the i'th term of 0, 34, 118, 276, 532, 910, 1434, 2128?
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What is the d'th term of 14, 35, 72, 131, 218, 339, 500, 707?
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What is the v'th term of -13, -10, -7, -4, -1?
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