12 Days of Christmas
862
99 Bottles of Beer
677
Abundant Numbers
773
Arabic to Roman
474
Christmas Trees
755
Divisors
875
Emirp Numbers
602
Evil Numbers
657
Fibonacci
950
Fizz Buzz
780
Foo Fizz Buzz Bar
730
Happy Numbers
653
Leap Years
814
Niven Numbers
898
Odious Numbers
661
Ordinal Numbers
666
Pangram Grep
774
Pascal’s Triangle
604
Pernicious Numbers
649
Prime Numbers
769
Roman to Arabic
674
Seven Segment
466
Spelling Numbers
United States
298
λ
265
π
139
τ
137
φ
101
√2
86
𝑒
119