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Omni-MATH / Let N=1,2,3,…. Determine if there exists a strictly increasing function f: mathbbN mapsto mathbbN with the following properties: (i) f(1)=2; (ii) f(f(n))=f(n)+n,(n∈N). · Discussion

Discussing Let N={1,2,3,…}. Determine if there exists a strictly increasing function f: mathbb{N} mapsto mathbb{N} with the following properties: (i) f(1)=2; (ii) f(f(n))=f(n)+n,(n∈N). · Omni-MATH

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