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Find all strictly increasing functions f:N->N such that (f(x) + f(y))/(1 + f(x + y)) is a non-zero natural number, for all x, y∈N.
(No Solution Yet, 0 Comments) Submitted on 2021-01-24 by Danish Ahmed Khan   
Difficulty: 4 of 5 Bonus: Crackers (in Cryptography) Rating: 3.67
Can you crack the code used to transform the following numbers and come up with the final number?
    2461289=18
    11029447=1
    6332516=333561
    412961044=4141
    2234=23
    357924242=222
    139=9
    4344199=?

(hint by levik: the encoding is such that it will only work on some numbers, not all integers)

(Solution Posted, 6 Comments) Submitted on 2002-12-25 by Cory Taylor   
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