What is the f'th term of 5, 84, 301, 728, 1437, 2500, 3989?
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What is the d'th term of 223, 226, 229, 232, 235, 238?
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What is the o'th term of 787, 783, 777, 769, 759, 747?
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What is the u'th term of -7, 17, 57, 113?
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What is the k'th term of 263, 547, 831, 1115?
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What is the b'th term of -32, -69, -130, -227, -372, -577, -854?
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What is the l'th term of -494, -986, -1478, -1970?
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