Abundant Numbers
103rd
Abundant Numbers (Long)
64th
Christmas Trees
109th
Collatz
97th
Divisors
231st
Emirp Numbers
88th
Evil Numbers
114th
Evil Numbers (Long)
57th
Fibonacci
234th
Fizz Buzz
1,083rd
Foo Fizz Buzz Bar
33rd
Fractions
71st
Happy Numbers
90th
Happy Numbers (Long)
49th
Leap Years
139th
Look and Say
40th
Niven Numbers
105th
Niven Numbers (Long)
54th
Odious Numbers
182nd
Ordinal Numbers
99th
Pascal’s Triangle
139th
Prime Numbers
210th
Recamán
92nd