Abundant Numbers
750
Arabic to Roman
633
Christmas Trees
697
Diamonds
563
Divisors
919
Emirp Numbers
642
Evil Numbers
800
Fibonacci
947
Fizz Buzz
983
Happy Numbers
660
Leap Years
827
Leyland Numbers
890
Niven Numbers
759
Odious Numbers
800
Ordinal Numbers
794
Pangram Grep
774
Pascal’s Triangle
730
Pernicious Numbers
702
Prime Numbers
645
Quine
969
√2
628