12 Days of Christmas
556th55th
99 Bottles of Beer
47th
Arabic to Roman
51st
Arrows
38th
CSS Colors
36th
Day of Week
1st
Fizz Buzz
150th693rd1st
Happy Numbers (Long)
341st55th
Look and Say
52nd
Lucky Tickets
145th27th
Number Spiral
188th31st
Pascal’s Triangle
436th73rd
Pernicious Numbers
87th
Recamán
47th