Abundant Numbers
438th39th
Abundant Numbers (Long)
195th33rd
Arithmetic Numbers
30th
Catalan Numbers
223rd
Collatz
95th
517th
Cubes
41st
Diamonds
18th
Divisors
402nd44th
Emirp Numbers
72nd
Emirp Numbers (Long)
35th
Evil Numbers
1,055th
Evil Numbers (Long)
165th24th
Fibonacci
413th
193rd93rd
Fizz Buzz
138th51st63rd412th274th61st156th
Foo Fizz Buzz Bar
1st
Fractions
93rd
Happy Numbers
363rd
Happy Numbers (Long)
49th25th
207th
Intersection
29th
Leap Years
55th
225th31st
Lucky Numbers
98th
Niven Numbers
44th
Niven Numbers (Long)
1st
Odious Numbers
800th
Odious Numbers (Long)
432nd36th
Ordinal Numbers
35th
Pascal’s Triangle
266th58th
Pernicious Numbers
72nd
Pernicious Numbers (Long)
31st
Prime Numbers
24th
Prime Numbers (Long)
226th1st
Quine
79th
Recamán
315th43rd
Tongue-twisters
51st
Tower of Hanoi
81st
√2
21st