Solve -8 = -3*b + 2*a, 4*a - 1 = -2*b + a for b.
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What is the u'th term of -44, -41, -44, -59, -92, -149, -236?
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What is the y'th term of -1, -35, -91, -169, -269, -391, -535?
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What is the a'th term of 10, 53, 124, 223, 350?
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What is the h'th term of 5, 45, 111, 203?
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What is the n'th term of 21, 85, 193, 345, 541?
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What is the b'th term of 411, 813, 1215, 1617, 2019, 2421?
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