Abundant Numbers
475th39th
Abundant Numbers (Long)
221st35th
Arithmetic Numbers
32nd
Catalan Numbers
239th
Collatz
95th
535th
Cubes
42nd
Diamonds
23rd
Divisors
440th46th
Emirp Numbers
77th
Emirp Numbers (Long)
38th
Evil Numbers
1,067th
Evil Numbers (Long)
171st25th
Fibonacci
419th
197th94th
Fizz Buzz
142nd52nd69th418th276th48th158th
Foo Fizz Buzz Bar
21st
Fractions
95th
Happy Numbers
189th
Happy Numbers (Long)
50th26th
69th
Intersection
16th
Leap Years
62nd
233rd31st
Lucky Numbers
107th
Niven Numbers
46th
Niven Numbers (Long)
1st
Odious Numbers
807th
Odious Numbers (Long)
436th38th
Ordinal Numbers
35th
Pascal’s Triangle
224th61st
Pernicious Numbers
75th
Pernicious Numbers (Long)
35th
Prime Numbers
27th
Prime Numbers (Long)
257th1st
Quine
83rd
Recamán
326th44th
Tongue-twisters
58th
Tower of Hanoi
97th
√2
22nd