# \[Math\] Closed form from a recursion relation?

**URL:** <https://boards.straightdope.com/t/math-closed-form-from-a-recursion-relation/642225>\
**Category:** Factual Questions\
**Created:** [November 27, 2012, 1:18am UTC](https://boards.straightdope.com/t/math-closed-form-from-a-recursion-relation/642225 "2012-11-27T01:18:52Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![Indistinguishable](https://avatars.discourse-cdn.com/v4/letter/i/90ced4/32.png) [@Indistinguishable](https://boards.straightdope.com/u/Indistinguishable)\
**Post date:** [November 28, 2012, 11:21pm UTC](https://boards.straightdope.com/t/math-closed-form-from-a-recursion-relation/642225/21 "2012-11-28T23:21:38Z")

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[It seems someone in this thread clings to the abominable practice of excluding 0 from the natural numbers…](http://mathoverflow.net/questions/114824/how-to-solve-a-specific-multivariate-recurrence-relation-or-general-ones)

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