12 Days of Christmas
865
99 Bottles of Beer
682
Abundant Numbers
773
Arabic to Roman
487
Christmas Trees
779
Divisors
875
Emirp Numbers
602
Evil Numbers
657
Fibonacci
950
Fizz Buzz
780
Foo Fizz Buzz Bar
732
Happy Numbers
652
Leap Years
814
Niven Numbers
898
Odious Numbers
661
Ordinal Numbers
668
Pangram Grep
774
Pascal’s Triangle
604
Pernicious Numbers
649
Prime Numbers
769
Roman to Arabic
672
Seven Segment
466
Spelling Numbers
United States
298
λ
265
π
139
τ
137
φ
101
√2
86
𝑒
119