MathDB
Function defined on N with conditions

Source: IberoAmerican 1989 Q5

November 27, 2010
functionPutnamalgebra proposedalgebra

Problem Statement

Let the function ff be defined on the set N\mathbb{N} such that
\text{(i)}\ \   f(1)=1 \text{(ii)}\   f(2n+1)=f(2n)+1 \text{(iii)}  f(2n)=3f(n)
Determine the set of values taken ff.