Abundant Numbers
1,800th
12th
Diamonds
979th
Divisors
1,581st19th
Emirp Numbers
484th
Evil Numbers
2,133rd1st
Evil Numbers (Long)
1st
Fibonacci
3,524th
7,835th
3,763rd1st
Fizz Buzz
127th15th
Foo Fizz Buzz Bar
4th
Fractions
885th153rd
Happy Numbers
1,168th1st
Happy Numbers (Long)
927th1st
ISBN
50th
Kolakoski Sequence
1,105th1st
Leap Years
1,192nd
681st8th
Look and Say
461st53rd
Niven Numbers
1st
Niven Numbers (Long)
1st
Odious Numbers
3,085th1st
Odious Numbers (Long)
1st
Ordinal Numbers
882nd
Pangram Grep
24th
Pascal’s Triangle
1st
Pernicious Numbers
21st
Pernicious Numbers (Long)
240th
Prime Numbers
1st
Prime Numbers (Long)
847th
1st
Reverse Polish Notation
721st
Smith Numbers
705th
Spelling Numbers
268th
Transpose Sentence
62nd
Van Eck Sequence
747th7th