Abundant Numbers
1,966th2,021st
Abundant Numbers (Long)
1,525th1,324th
Catalan Numbers
123rd28th
Christmas Trees
1,052nd1,367th
Collatz
827th1,651st
Diamonds
1,027th
Divisors
1,533rd1,444th
Emirp Numbers
1,096th1,334th
Emirp Numbers (Long)
549th742nd
Evil Numbers
3,203rd1,032nd
Evil Numbers (Long)
1,764th887th
Fibonacci
1,999th1,128th
Fizz Buzz
978th3,421st
Foo Fizz Buzz Bar
534th1,380th
Fractions
822nd980th
Happy Numbers
1,076th1,225th
Happy Numbers (Long)
755th769th
Intersection
614th813th
ISBN
973rd
Kolakoski Sequence
1,054th971st
Leap Years
119th971st
Leyland Numbers
881st490th
Look and Say
992nd1,088th
Morse Encoder
583rd
Niven Numbers
1,989th1,641st
Niven Numbers (Long)
890th722nd
Odious Numbers
2,677th817th
Odious Numbers (Long)
1,582nd739th
Ordinal Numbers
937th989th
Pangram Grep
834th1,063rd
Pascal’s Triangle
1,429th635th
Pernicious Numbers
2,311th1,416th
Pernicious Numbers (Long)
1,074th637th
Prime Numbers
1,795th2,220th
Prime Numbers (Long)
1,203rd1,318th
Quine
3,259th
Recamán
955th586th
Reverse Polish Notation
557th798th
ROT13
516th
Time Distance
348th489th
Van Eck Sequence
883rd
√2
1,153rd