12 Days of Christmas
293rd
Arabic to Roman
174th
Divisors
434th
Emirp Numbers
140th
Evil Numbers
401st
Fibonacci
157th512th731st110th194th79th104th210th1,903rd111th245th
Fizz Buzz
1,238th
Happy Numbers
172nd
Leap Years
138th
109th
Morse Decoder
82nd
Morse Encoder
81st
Niven Numbers
314th
Odious Numbers
315th
Pernicious Numbers
190th
Prime Numbers
421st
Roman to Arabic
106th
Seven Segment
88th