Ruby
#1 377
#2 170
#3 50
#4 27
#5 18
#6 10
#7 10
#8 9
#9 8
#10 7
#11 4
#12 2
#13 2
#14 1
#15 1
#16 1
#17 1
#18 1
#19 1
#20 1