Solve -u - 13 = -2*c, 31*c + 3*u = 27*c + 1 for c.
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What is the m'th term of 57, 113, 167, 213, 245?
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What is the q'th term of 117, 237, 359, 483, 609?
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What is the o'th term of -46, -91, -136?
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What is the a'th term of 6, 19, 42, 75, 118, 171, 234?
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What is the v'th term of 17, 48, 97, 170, 273?
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What is the f'th term of 73, 303, 691, 1243, 1965?