What is the f'th term of -99, -201, -303, -405, -507?
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What is the c'th term of 1, 6, 17, 34, 57?
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What is the w'th term of 13, 83, 215, 415, 689, 1043, 1483, 2015?
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What is the l'th term of 422, 438, 454, 470, 486?
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What is the c'th term of -9, -64, -157, -288?
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What is the g'th term of 883, 884, 885?
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What is the d'th term of -5, -13, -23, -35, -49, -65?
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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 t'th term of -85, -170, -255, -340?
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What is the y'th term of -43, -42, -41?
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What is the s'th term of 83, 218, 387, 584, 803, 1038, 1283, 1532?
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