12 Days of Christmas
818
99 Bottles of Beer
670
Abundant Numbers
774
Arabic to Roman
460
Christmas Trees
751
Divisors
876
Emirp Numbers
603
Evil Numbers
657
Fibonacci
951
Fizz Buzz
780
Foo Fizz Buzz Bar
730
Happy Numbers
653
Leap Years
815
Niven Numbers
899
Odious Numbers
661
Ordinal Numbers
667
Pangram Grep
758
Pascal’s Triangle
600
Pernicious Numbers
650
Prime Numbers
770
Roman to Arabic
675
Seven Segment
462
Spelling Numbers
United States
276
λ
219
π
138
τ
136
φ
101
√2
86
𝑒
120