What is the k'th term of -6, -19, -58, -135, -262, -451, -714?
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What is the f'th term of 513, 1015, 1515, 2013, 2509, 3003?
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What is the f'th term of 15, -20, -87, -192, -341, -540?
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What is the x'th term of -36, -37, -24, 9, 68, 159?
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What is the y'th term of 19, 48, 83, 130, 195, 284, 403?
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What is the g'th term of 3113, 3121, 3129, 3137?
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What is the s'th term of 74, 86, 98, 110?
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What is the n'th term of 136, 153, 188, 247, 336, 461, 628?
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What is the z'th term of -331, -664, -997, -1330, -1663?
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What is the f'th term of 513, 1015, 1515, 2013, 2509, 3003?
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What is the r'th term of -1820, -3633, -5444, -7253, -9060?
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What is the v'th term of -16, -77, -184, -343, -560?
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What is the f'th term of 15, -20, -87, -192, -341, -540?
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What is the u'th term of 2719, 5439, 8159, 10879, 13599?
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What is the f'th term of 88, 92, 100, 112, 128?
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