12 Days of Christmas
804
99 Bottles of Beer
600
Abundant Numbers
739
Arabic to Roman
363
Christmas Trees
685
Diamonds
513
Divisors
905
Emirp Numbers
724
Evil Numbers
958
Fibonacci
960
Fizz Buzz
945837
Happy Numbers
584
Leap Years
785
Leyland Numbers
676
Lucky Tickets
528
Niven Numbers
802
Odious Numbers
784
Pangram Grep
865
Pascal’s Triangle
908
Pernicious Numbers
686
Prime Numbers
872
Quine
946
Roman to Arabic
399
Seven Segment
649
Sierpiński Triangle
478
Spelling Numbers
376
π
355
τ
331
φ
544
𝑒
373