12 Days of Christmas
60th
99 Bottles of Beer
47th
Abundant Numbers
58th
Abundant Numbers (Long)
38th
Christmas Trees
59th
Divisors
126th
86th1,383rd
Emirp Numbers
63rd
Emirp Numbers (Long)
18th
Evil Numbers
68th
Evil Numbers (Long)
34th
Fibonacci
296th
183rd
Fizz Buzz
594th345th394th96th1,228th
Foo Fizz Buzz Bar
114th99th40th
Happy Numbers
30th
Happy Numbers (Long)
17th
Leap Years
149th
119th
Niven Numbers
57th
Niven Numbers (Long)
28th
Prime Numbers
89th
Prime Numbers (Long)
35th
λ
19th