numbers 2,0,1,5 occur in sequence of last digits 2,0,2,9,3,...
Source: 2015 Belarus TST 2.2
November 5, 2020
Sequencenumber theoryLast digitDigits
Problem Statement
In the sequence of digits any digit it equal to the last digit in the decimal representation of the sum of four previous digits. Do the four numbers in that order occur in the sequence?Folklore