12 Days of Christmas
309th
Arabic to Roman
182nd
Divisors
449th
Emirp Numbers
146th
Evil Numbers
415th
Fibonacci
162nd530th761st114th205th84th106th215th1,971st114th250th
Fizz Buzz
1,275th
Happy Numbers
181st
Leap Years
142nd
109th
Morse Decoder
85th
Morse Encoder
83rd
Niven Numbers
328th
Odious Numbers
325th
Pernicious Numbers
195th
Prime Numbers
434th
Roman to Arabic
113th
Seven Segment
90th