Arabic to Roman
740
Christmas Trees
732
Divisors
952
Emirp Numbers
655
Evil Numbers
619
Fibonacci
866
Fizz Buzz
920
Happy Numbers
791
Leap Years
807
Niven Numbers
865
Odious Numbers
626
Pangram Grep
756
Pascal’s Triangle
744
Prime Numbers
850
Quine
810
Sierpiński Triangle
702
λ
619
π
588
τ
577
φ
822
√2
806
𝑒
754