Abundant Numbers
112th
Abundant Numbers (Long)
73rd
Christmas Trees
115th
Collatz
114th
Divisors
238th
Emirp Numbers
95th
Evil Numbers
122nd
Evil Numbers (Long)
66th
Fibonacci
246th
Fizz Buzz
1,123rd
Foo Fizz Buzz Bar
33rd
Fractions
75th
Happy Numbers
94th
Happy Numbers (Long)
51st
Leap Years
149th
Look and Say
40th
Niven Numbers
118th
Niven Numbers (Long)
59th
Odious Numbers
194th
Ordinal Numbers
104th
Pascal’s Triangle
152nd
Prime Numbers
224th
Recamán
96th