Abundant Numbers
2,008th
15th
Diamonds
1,108th
Divisors
1,741st20th
Emirp Numbers
543rd
Evil Numbers
2,348th1st
Evil Numbers (Long)
1st
Fibonacci
3,927th
8,577th
4,196th1st
Fizz Buzz
145th17th
Foo Fizz Buzz Bar
3rd
Fractions
1,003rd188th
Happy Numbers
1,307th1st
Happy Numbers (Long)
1,046th16th
ISBN
56th
Kolakoski Sequence
1,225th1st
Leap Years
1,163rd
855th9th
Look and Say
521st57th
Niven Numbers
1st
Niven Numbers (Long)
1st
Odious Numbers
3,360th1st
Odious Numbers (Long)
1st
Ordinal Numbers
947th
Pangram Grep
31st
Pascal’s Triangle
1st
Pernicious Numbers
29th
Pernicious Numbers (Long)
298th
Prime Numbers
2,225th
1,535th
1,938th1st819th
Prime Numbers (Long)
1,000th
1st
Reverse Polish Notation
791st
Smith Numbers
805th
Spelling Numbers
269th
Transpose Sentence
82nd
Van Eck Sequence
860th8th