What is the x'th term of 13, -61, -293, -761, -1543?
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What is the c'th term of 21, 169, 417, 765?
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What is the a'th term of -10, -20, -16, 8, 58, 140?
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What is the y'th term of 214, 428, 642, 856, 1070, 1284?
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What is the i'th term of 5368, 5370, 5372, 5374, 5376?
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What is the b'th term of 81, 116, 211, 396, 701, 1156, 1791, 2636?
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What is the d'th term of 151, 155, 161, 169?
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What is the a'th term of 312, 1223, 2742, 4869, 7604?
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What is the h'th term of 58, 100, 144, 190, 238?
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What is the k'th term of 16, 24, 32, 40, 48?
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What is the g'th term of -161, -323, -483, -641, -797, -951?
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What is the y'th term of 49, 101, 143, 169, 173, 149?
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What is the l'th term of 51, 65, 51, 15, -37, -99?
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