Abundant Numbers
1,855th
12th
Diamonds
970th
Divisors
1,591st18th
Emirp Numbers
486th
Evil Numbers
2,131st1st
Evil Numbers (Long)
1st
Fibonacci
3,592nd
7,780th
3,835th1st
Fizz Buzz
126th14th
Foo Fizz Buzz Bar
4th
Fractions
880th150th
Happy Numbers
1,156th1st
Happy Numbers (Long)
913th1st
ISBN
49th
Kolakoski Sequence
1,100th1st
Leap Years
1,257th
712th8th
Look and Say
453rd53rd
Niven Numbers
1st
Niven Numbers (Long)
1st
Odious Numbers
3,027th1st
Odious Numbers (Long)
1st
Ordinal Numbers
883rd
Pangram Grep
24th
Pascal’s Triangle
1st
Pernicious Numbers
21st
Pernicious Numbers (Long)
200th
Prime Numbers
1st
Prime Numbers (Long)
834th
1st
Reverse Polish Notation
710th
Smith Numbers
694th
Spelling Numbers
265th
Transpose Sentence
60th
Van Eck Sequence
743rd7th