What is the i'th term of 150, 152, 154, 156, 158?
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What is the x'th term of 12, 48, 106, 186, 288?
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What is the f'th term of -2, 0, 0, -2?
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What is the x'th term of -115, -229, -343?
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What is the d'th term of -21, -17, -11, -3?
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What is the r'th term of 258, 1072, 2428, 4326, 6766, 9748, 13272?
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What is the w'th term of 152, 153, 154, 155, 156?
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What is the a'th term of 13, 30, 49, 70?
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What is the c'th term of 10, 33, 90, 193, 354, 585?
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What is the v'th term of -2056, -2057, -2058?
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What is the s'th term of 37, 14, -9, -32, -55, -78?
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What is the r'th term of 135, 129, 109, 69, 3, -95, -231?
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What is the n'th term of 16, 49, 98, 169, 268, 401, 574?
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