12 Days of Christmas
687
99 Bottles of Beer
811
Abundant Numbers
921
Arabic to Roman
518
Christmas Trees
697
Diamonds
671
Divisors
933
Emirp Numbers
952
Evil Numbers
649
Fibonacci
826
Fizz Buzz
951
804
Happy Numbers
830
Leap Years
683
Leyland Numbers
714
Morse Decoder
432
Morse Encoder
467
Niven Numbers
964
Odious Numbers
706
Ordinal Numbers
721
Pangram Grep
914
Pascal’s Triangle
867
Pernicious Numbers
545
Prime Numbers
875
Quine
1,000
370
893
Roman to Arabic
Seven Segment
627
Sierpiński Triangle
836
Spelling Numbers
581
π
τ
φ
𝑒
727