12 Days of Christmas
487
99 Bottles of Beer
659
Abundant Numbers
750
Arabic to Roman
440
Christmas Trees
751
Divisors
876
Emirp Numbers
522
Evil Numbers
641
Fibonacci
939
Fizz Buzz
780
Foo Fizz Buzz Bar
728
Happy Numbers
545
Leap Years
814
Niven Numbers
899
Odious Numbers
653
Ordinal Numbers
667
Pangram Grep
758
Pascal’s Triangle
600
Pernicious Numbers
650
Prime Numbers
720
Roman to Arabic
663
Seven Segment
450
Spelling Numbers
United States
243
λ
178
π
138
τ
135
φ
100
√2
85
𝑒
120