Abundant Numbers
110th
Abundant Numbers (Long)
72nd
Christmas Trees
115th
Collatz
110th
Divisors
238th
Emirp Numbers
95th
Evil Numbers
120th
Evil Numbers (Long)
64th
Fibonacci
244th
Fizz Buzz
1,118th
Foo Fizz Buzz Bar
33rd
Fractions
75th
Happy Numbers
94th
Happy Numbers (Long)
51st
Leap Years
147th
Look and Say
40th
Niven Numbers
116th
Niven Numbers (Long)
59th
Odious Numbers
193rd
Ordinal Numbers
103rd
Pascal’s Triangle
152nd
Prime Numbers
224th
Recamán
96th