12 Days of Christmas
804
99 Bottles of Beer
600
Abundant Numbers
738
Arabic to Roman
362
Christmas Trees
685
Diamonds
513
Divisors
904
Emirp Numbers
723
Evil Numbers
957
Fibonacci
960
Fizz Buzz
944
836
Happy Numbers
583
Leap Years
785
Leyland Numbers
675
Lucky Tickets
526
Niven Numbers
801
Odious Numbers
783
Pangram Grep
864
Pascal’s Triangle
907
Pernicious Numbers
686
Prime Numbers
871
Quine
946
Roman to Arabic
399
Seven Segment
648
Sierpiński Triangle
494
Spelling Numbers
377
π
355
τ
330
φ
543
𝑒
372