12 Days of Christmas
786
99 Bottles of Beer
701
Abundant Numbers
789
729
Arabic to Roman
534
Christmas Trees
564
Diamonds
453
Divisors
814
Emirp Numbers
493
Evil Numbers
800
Fibonacci
837
Fizz Buzz
598
Happy Numbers
413
Leap Years
717
Niven Numbers
880
Odious Numbers
800
Pascalβs Triangle
519
Pernicious Numbers
702
Prime Numbers
597
Quine
969
Roman to Arabic
424
Seven Segment
624
Spelling Numbers
386
Ο
310