Abundant Numbers
114th
Abundant Numbers (Long)
75th
Christmas Trees
115th
Collatz
119th
Divisors
244th
Emirp Numbers
88th
Evil Numbers
124th
Evil Numbers (Long)
67th
Fibonacci
253rd
Fizz Buzz
1,135th
Foo Fizz Buzz Bar
33rd
Fractions
76th
Happy Numbers
89th
Happy Numbers (Long)
53rd
Leap Years
153rd
Look and Say
40th
Niven Numbers
122nd
Niven Numbers (Long)
61st
Odious Numbers
196th
Ordinal Numbers
106th
Pascal’s Triangle
154th
Prime Numbers
229th
Recamán
98th