Deep Exponents


How many positive integers $n$ with $n≤154$ are there such that the coefficient of $x^n$ in the expansion of

$(1+x^7+x^{14}+...+x^{77})(1+x^{11}+x^{22}+...+x^{77})$

is $0$$?$


Equation  


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Attempt 19


Solve 10


First Solve mollamdkashem22