C#
#1 252
#2 228
#3 155
#4 145
#5 86
#6 33
#7 9
#8 8
#9 7
#10 5
#11 4
#12 3
#13 3
#14 2
#15 2
#16 1
#17 1
#18 1
#19 1
#20 1