12 Days of Christmas
321st
Arabic to Roman
191st
Divisors
461st
Emirp Numbers
154th
Evil Numbers
431st
Fibonacci
171st584th789th123rd218th88th115th223rd2,055th134th267th
Fizz Buzz
1,304th
Happy Numbers
185th
Leap Years
154th
110th
Morse Decoder
87th
Morse Encoder
88th
Niven Numbers
346th
Odious Numbers
335th
Pernicious Numbers
198th
Prime Numbers
450th
Roman to Arabic
118th
Seven Segment
93rd