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I am trying to see some results for my sequence in Wolfram Alpha, but I don't know how to enter the "n" letter as an index. My sequence is a_(n+1) = ((3a_n)+2)/5. The reddit answer with underscores does not help a­­­­_(n+1) = (3a_n+2)/5, neither does the subscript function. subsrcript[a­­­­, n+1] = (3*subscript[a, n]+2)/. What is the right syntax?

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You can try { and }. Just have a look at : http://www.wolframalpha.com/input/?i=a%C2%AD%C2%AD%C2%AD%C2%AD_%7Bn%2B1%7D+%3D+(3a_%7Bn%7D%2B2)%2F5

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  • $\begingroup$ The what is this ( reference.wolfram.com/language/ref/Subscript.html) documentation for? It cleary shows the result. $\endgroup$ – S4NNY1 Aug 21 '18 at 15:19
  • $\begingroup$ They make a distinction (and they are right) between a sequence (which they see as a function) and a subscript which is only an indexation. $\endgroup$ – tmaths Aug 21 '18 at 15:21
  • $\begingroup$ Ok, so that is the difference. Thanks. $\endgroup$ – S4NNY1 Aug 21 '18 at 15:27

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