12 Days of Christmas
48th
99 Bottles of Beer
39th
Abundant Numbers
54th
Abundant Numbers (Long)
33rd
Christmas Trees
54th
Divisors
112th
80th
1,244th
Emirp Numbers
57th
Emirp Numbers (Long)
15th
Evil Numbers
63rd
Evil Numbers (Long)
27th
Fibonacci
252nd
Fizz Buzz
512th
307th
354th
1,041st
Foo Fizz Buzz Bar
93rd
78th
23rd
Happy Numbers
27th
Happy Numbers (Long)
12th
Leap Years
132nd
110th
Niven Numbers
48th
Niven Numbers (Long)
22nd
Prime Numbers
75th
Prime Numbers (Long)
26th
λ
15th