What is the x'th term of -26, -70, -144, -248?
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What is the z'th term of -123, -249, -375?
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What is the i'th term of -263, -533, -803, -1073, -1343?
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What is the d'th term of -135, -265, -409, -573, -763, -985, -1245, -1549?
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What is the g'th term of 158, 157, 156?
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What is the v'th term of -46, -50, -54?
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What is the a'th term of 51, 104, 157, 210, 263, 316?
一个美术生