Abundant Numbers
205th516th
Abundant Numbers (Long)
103rd251st
Catalan Numbers
1st1st
Christmas Trees
146th278th
Collatz
121st277th
Diamonds
207th
Divisors
78th390th
Emirp Numbers
80th262nd
Emirp Numbers (Long)
36th131st
Evil Numbers
239th299th
Evil Numbers (Long)
98th198th
Fibonacci
128th153rd
Fizz Buzz
376th672nd
Foo Fizz Buzz Bar
48th267th
Fractions
62nd127th
Happy Numbers
82nd190th
Happy Numbers (Long)
46th98th
Intersection
68th178th
ISBN
140th
Kolakoski Sequence
83rd222nd
Leap Years
51st95th
Leyland Numbers
64th120th
Look and Say
109th244th
Niven Numbers
167th257th
Niven Numbers (Long)
60th103rd
Odious Numbers
211th132nd
Odious Numbers (Long)
93rd123rd
Ordinal Numbers
143rd141st
Pangram Grep
57th216th
Pascal’s Triangle
106th124th
Pernicious Numbers
132nd204th
Pernicious Numbers (Long)
52nd110th
Prime Numbers
116th410th
Prime Numbers (Long)
62nd187th
Quine
294th
Recamán
84th95th
Reverse Polish Notation
75th133rd
Time Distance
29th87th
Van Eck Sequence
217th
√2
416th