ok this seems like a predominantly maths problem but i need it for a little project of mine related to classical dynamics.(adsbygoogle = window.adsbygoogle || []).push({});

So i have 2d numbers X_{k}, which are constrained by the relation that their sum is n.

what i need to find out is the number of possible permutations of the 2d numbers (X_{k}) that satisfy this condition.

the numbers X_{k}belong to the set of whole numbers, and n belongs to the set of natural numbers.

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# I have 2d numbers X

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