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Erdős problem / erdos

no open offer

Problem 260

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  1. vf_7fce92aa41c91bb9

    theoretical

    Erdős Problem #260: declared status 'open'. Formalized: yes. Let a1<a2<⋯a_1<a_2<\cdots be an increasing sequence such that an/n→∞a_n/n\to \infty. Is the sum∑nan2an\sum_n \frac{a_n}{2^{a_n}}irrational? Prize: no. Tags: irrationality.

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