Question 50
Determine all sequences $a_0, a_1, a_2, \dots$ of positive reals such that
$$
a_{n^2+m^2} = a_n a_m^n
$$
for all $n, m$.
$$
a_{n^2+m^2} = a_n a_m^n
$$
for all $n, m$.
MathNet 2013 Question 50
Math Olympiad Vault · MathNet 2013
Math Olympiad Vault · MathNet 2013