Maths problem

[borisp]

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the idea is similar to what you do with the catalan number generating function/recurrence.

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The catalan generating function would be the integral of this function, divided by x. Is there a nice combinatorial interpretation of derivatives and integrals of generating functions?

Forgive me, I am an analyst [img]/images/graemlins/smile.gif[/img]...haven't done this since undergrad.

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idk, i too am an analyst (well, more of a probabilist these days ... but close enough)