What is the d'th term of 15, 31, 45, 57?
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What is the f'th term of -99, -201, -303, -405, -507?
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What is the c'th term of 2, 14, 38, 74, 122, 182?
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What is the u'th term of 52, 51, 50, 49, 48?
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What is the a'th term of -4, -69, -196, -385, -636?
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What is the l'th term of -608, -1205, -1802, -2399?
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What is the n'th term of -294, -351, -408, -465?
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What is the a'th term of 1699, 1697, 1695, 1693?
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What is the w'th term of 4, 2, 0, -2, -4?
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What is the u'th term of -360, -722, -1084, -1446?
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What is the a'th term of -755, -763, -771, -779, -787, -795?
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What is the d'th term of -21, -15, 1, 33, 87, 169, 285?
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What is the o'th term of -110, -211, -312, -413, -514?
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