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Erdős problem 221

Is there a set ANA\subset\mathbb{N} such that, for all large NN, A{1,,N}N/logN\lvert A\cap\{1,\ldots,N\}\rvert \ll N/\log N and such that every large integer can be written as 2k+a2^k+a for some k0k\geq 0 and aAa\in A?
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Accepted in Vela Mathematics Program

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