Abundant Numbers
1,965th
80th
Diamonds
870th
Divisors
1,245th18th
Emirp Numbers
389th
Evil Numbers
2,052nd1st
Evil Numbers (Long)
1st
Fibonacci
3,779th
7,751st
3,795th1st
Fizz Buzz
21st456th
Foo Fizz Buzz Bar
90th
Fractions
827th124th
Happy Numbers
1,138th308th
Happy Numbers (Long)
802nd2nd
ISBN
67th
Kolakoski Sequence
1,090th1st
Leap Years
1,190th
661st157th
Look and Say
421st38th
Niven Numbers
388th
Niven Numbers (Long)
2nd
Odious Numbers
2,976th1st
Odious Numbers (Long)
1st
Ordinal Numbers
705th
Pangram Grep
3rd
Pascal’s Triangle
1st
Pernicious Numbers
21st
Pernicious Numbers (Long)
168th
Prime Numbers
1st
Prime Numbers (Long)
814th
1st
Reverse Polish Notation
568th
Smith Numbers
597th
Spelling Numbers
224th
Transpose Sentence
64th
Van Eck Sequence
734th7th