What is the x'th term of 6, 27, 78, 171, 318?
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What is the d'th term of -3, -19, -35, -51, -67?
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What is the i'th term of -42, -65, -76, -69, -38, 23, 120, 259?
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What is the g'th term of -4583, -4584, -4585, -4586, -4587?
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What is the u'th term of -26, -32, -16, 22, 82, 164?
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What is the x'th term of 7679, 7675, 7657, 7619, 7555, 7459, 7325, 7147?
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What is the d'th term of -12268, -24550, -36820, -49072, -61300, -73498?
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