Abundant Numbers
117th
Abundant Numbers (Long)
77th
Christmas Trees
117th
Collatz
127th
Divisors
246th
Emirp Numbers
89th
Evil Numbers
124th
Evil Numbers (Long)
68th
Fibonacci
260th
Fizz Buzz
1,145th
Foo Fizz Buzz Bar
33rd
Fractions
82nd
Happy Numbers
93rd
Happy Numbers (Long)
56th
Leap Years
158th
Look and Say
42nd
Niven Numbers
125th
Niven Numbers (Long)
62nd
Odious Numbers
198th
Ordinal Numbers
110th
Pascal’s Triangle
157th
Prime Numbers
235th
Recamán
101st