Abundant Numbers
1,819th
12th
Diamonds
957th
Divisors
1,570th18th
Emirp Numbers
479th
Evil Numbers
2,095th1st
Evil Numbers (Long)
1st
Fibonacci
3,547th
7,700th
3,786th1st
Fizz Buzz
123rd13th
Foo Fizz Buzz Bar
4th
Fractions
864th145th
Happy Numbers
1,142nd1st
Happy Numbers (Long)
899th1st
ISBN
47th
Kolakoski Sequence
1,077th1st
Leap Years
1,237th
701st8th
Look and Say
441st53rd
Niven Numbers
1st
Niven Numbers (Long)
1st
Odious Numbers
2,985th1st
Odious Numbers (Long)
1st
Ordinal Numbers
872nd
Pangram Grep
23rd
Pascalβs Triangle
1st
Pernicious Numbers
20th
Pernicious Numbers (Long)
194th
Prime Numbers
1st
Prime Numbers (Long)
814th
1st
Reverse Polish Notation
698th
Smith Numbers
685th
Spelling Numbers
261st
Transpose Sentence
58th
Van Eck Sequence
728th7th