Abundant Numbers
699
Arabic to Roman
821
Divisors
838
Evil Numbers
741
Fibonacci
878
Fizz Buzz
829
Happy Numbers
646
Kolakoski Sequence
712
Leap Years
768
Niven Numbers
733
Odious Numbers
769
Ordinal Numbers
802
Pangram Grep
847
Pernicious Numbers
678
Prime Numbers
635
Quine
969
Recamán
824
Seven Segment
847
United States
Van Eck Sequence
778
π
349