12 Days of Christmas
666
99 Bottles of Beer
677
Abundant Numbers
774
Arabic to Roman
474
Christmas Trees
756
Divisors
875
Emirp Numbers
603
Evil Numbers
657
Fibonacci
950
Fizz Buzz
780
Foo Fizz Buzz Bar
730
Happy Numbers
653
Leap Years
814
Niven Numbers
899
Odious Numbers
661
Ordinal Numbers
667
Pangram Grep
758
Pascal’s Triangle
605
Pernicious Numbers
650
Prime Numbers
769
Roman to Arabic
674
Seven Segment
461
Spelling Numbers
United States
276
λ
220
π
137
τ
136
φ
101
√2
86
𝑒
120