sequence, each is divisible by previous and by the sum of 2 previous numbers
Source: Tournament of Towns 2020 oral p1 (15 March 2020)
May 18, 2020
Sequencenumber theoryDivisibility
Problem Statement
positive integers are written in one line. Each of them starting with the third is divisible by previous and by the sum of two previous numbers. What is the smallest value the last number can take?A. Gribalko