12 Days of Christmas
575th56th
99 Bottles of Beer
50th
Arabic to Roman
52nd
Arrows
37th
CSS Colors
36th
Day of Week
74th
Fizz Buzz
150th731st3rd
Happy Numbers (Long)
339th56th
Look and Say
51st
Lucky Tickets
149th27th
Number Spiral
190th33rd
Pascal’s Triangle
441st71st
Pernicious Numbers
86th
Recamán
47th