What is the x'th term of 50, 94, 136, 176, 214, 250, 284?
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What is the m'th term of 2, 21, 34, 41, 42, 37, 26?
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What is the r'th term of 86, 174, 262, 350, 438?
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What is the n'th term of 7, 67, 127, 187, 247, 307?
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What is the s'th term of -1772, -1777, -1784, -1793?
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What is the a'th term of 18, 36, 58, 84?
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What is the u'th term of 0, 28, 76, 144?
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