12 Days of Christmas
528
99 Bottles of Beer
702
Abundant Numbers
807
Arabic to Roman
480
Christmas Trees
822
Divisors
945
Emirp Numbers
567
Evil Numbers
690
Fibonacci
987
Fizz Buzz
812
Foo Fizz Buzz Bar
785
Happy Numbers
581
Leap Years
871
Niven Numbers
978
Odious Numbers
708
Ordinal Numbers
735
Pangram Grep
834
Pascal’s Triangle
661
Pernicious Numbers
707
Prime Numbers
775
Roman to Arabic
742
Seven Segment
498
Spelling Numbers
United States
265
λ
193
π
149
τ
149
φ
110
√2
92
𝑒
130