# Oh, Integrals ? How many ?

Calculus Level 2

Find the coefficient of $t^n$ in the expansion of $\displaystyle \underbrace{\int\int\int... ... \int \int}_\text{ n integrals } \underbrace{\text{d}t\text{ }\ldots\text{ }\ldots\text dt}_{\text{n}\text{ } dt's}$

Assume all constants are equal to $1.$

You might like Wow , really many Integrals !

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