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I have $$s_1 = 1, s_n = ns_{n-1}$$

I don't know what this means at all, sequence 1 equals 1, sequence number = number times sequence subscript number - 1

Is that it? Because it doesn't work at all when I try to work it out.

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    I am glad to see you posting questions, this will be more beneficial for you.2011-04-09

3 Answers 3