Abundant Numbers
113th
Abundant Numbers (Long)
74th
Christmas Trees
117th
Collatz
117th
Divisors
241st
Emirp Numbers
96th
Evil Numbers
123rd
Evil Numbers (Long)
66th
Fibonacci
249th
Fizz Buzz
1,129th
Foo Fizz Buzz Bar
33rd
Fractions
75th
Happy Numbers
95th
Happy Numbers (Long)
52nd
Leap Years
149th
Look and Say
40th
Niven Numbers
119th
Niven Numbers (Long)
60th
Odious Numbers
194th
Ordinal Numbers
105th
Pascal’s Triangle
152nd
Prime Numbers
227th
Recamán
97th