Arabic to Roman
738
Christmas Trees
723
Divisors
939
Emirp Numbers
648
Evil Numbers
617
Fibonacci
859
Fizz Buzz
916
Happy Numbers
781
Leap Years
800
Niven Numbers
852
Odious Numbers
621
Pangram Grep
747
Pascal’s Triangle
737
Prime Numbers
847
Quine
807
Sierpiński Triangle
639
λ
618
π
584
τ
572
φ
816
√2
794
𝑒
743