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Erdős problem 414

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Let h1(n)=h(n)h_1(n) = h(n) and hk(n)=h(hk−1(n))h_k(n) = h(h_{k-1}(n)). Is it true, for any m,nm,n, there exist ii and jj such that hi(m)=hj(n)h_i(m) = h_j(n)?

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Problem row
sha256:bcd3cb6f48dfb1550969569cb9060f249d1bd28662a445d43d679dfcdaa7bd57
Metadata
sha256:b47f027a55b1fa7676bb3b51ac33b93d0155fc94c2ca0168ffea5ba4ac20a6cf
Observation
sha256:9c8326e865b6017b103af7611c852a06776d81964979b8ab5a1b800cd550dff6
Content
sha256:40d81cff48c24baafc4d48f6cba1d61401d17530ea5be9d883ee08ce9599171d
Repository
sha256:a956b84c437202e5a02cc9e036a621bd14a302b34a75758115730bdbb77c52a4
Projection
sha256:a4a96441668a9f8b33afbcb3f696a2639f5fae145f36ddc063d7f67d5fb87ce8
Source commit
36c6d0fef71a3fec84d9dcd5eeca4e22e378f7cb
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