Mathematica
#1 12
#2 12
#3 7
#4 6
#5 5
#6 4
#7 4
#8 3
#9 3
#10 3
#11 2
#12 2
#13 1
#14 1
#15 1
#16 1
#17 1
#18 1
#19 1
#20 1