In gawk, as of 28 Jan, daily for 2 weeks, weekly for 100 days:

    #!/usr/bin/gawk -f
    
    BEGIN {
        # Data as of 2020-1-28
        doublerate = 1.71
        dailyrate = 2/doublerate
        cases = 6063
        deaths = 132
    
        now = mktime( "2020 01 28 00 00 00" )
    
        maxdays = 14
        interval = 1
    
        printf( "| %3s | %-12s | %12s | %14s |\n", "day", "date", "deaths", "cases" )
        printf( "|%-5s|%14s|%14s|%16s|\n", ":---", "------------:", "------------:", "-------------:" )
        for(day=1; day<=maxdays; day+=interval ) {
     date = strftime( "%b %d, %Y", now + day * 86400 )
     printf( "| %3i | %-12s | %'12i | %'14i |\n", day, date, deaths * (dailyrate^day), cases * (dailyrate^day) )
        }
    
        printf( "\n\n" )
    
        maxdays = 100
        interval = 7
    
        printf( "| %3s | %-12s | %12s | %14s |\n", "day", "date", "deaths", "cases" )
        printf( "|%-5s|%14s|%14s|%16s|\n", ":---", "------------:", "------------:", "-------------:" )
        for(day=1; day<=maxdays; day+=interval ) {
     date = strftime( "%b %d, %Y", now + day * 86400 )
     printf( "| %3i | %-12s | %'12i | %'14i |\n", day, date, deaths * (dailyrate^day), cases * (dailyrate^day) )
        }
    
        printf( "\n" )
    
    }