1
do{ print "$_\n" if(/3/||$_%3==0||$_%5==0) } for(1..49);
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
3 5 6 9 10 12 13 15 18 20 21 23 24 25 27 30 31 32 33 34 35 36 37 38 39 40 42 43 45 48