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Erdős problem 267

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If n1<n2<⋯n_1 < n_2 < \cdots with nk+1/nk≥c>1n_{k+1}/n_k \ge c > 1, must ∑k1/Fnk\sum_k 1/F_{n_k} be irrational? The proposed proof closes the range 1<c<21 < c < 2 left open by earlier criteria.

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Problem row
sha256:806b464b01e7b57a832725fcc09bb58038fe47c8de709d54c819572a099a9ba9
Metadata
sha256:d929e8a80cfc3a5b3611bdb7c0a69af7ab273b081df207914f42de1f2a15b21f
Observation
sha256:9c8326e865b6017b103af7611c852a06776d81964979b8ab5a1b800cd550dff6
Content
sha256:26d1c51ebb37be169b56457fa4309f8fd8cc0cf124f94014c2a7d10d97cbf78c
Repository
sha256:a956b84c437202e5a02cc9e036a621bd14a302b34a75758115730bdbb77c52a4
Projection
sha256:a4a96441668a9f8b33afbcb3f696a2639f5fae145f36ddc063d7f67d5fb87ce8
Source commit
36c6d0fef71a3fec84d9dcd5eeca4e22e378f7cb
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