12 Days of Christmas
781
99 Bottles of Beer
696
Abundant Numbers
737
717
Arabic to Roman
518
Christmas Trees
554
Diamonds
444
Divisors
801
Emirp Numbers
482
Evil Numbers
785
Fibonacci
826
Fizz Buzz
594
Happy Numbers
405
Leap Years
706
Niven Numbers
865
Odious Numbers
783
Pascalβs Triangle
506
Pernicious Numbers
686
Prime Numbers
585
Quine
946
Roman to Arabic
411
Seven Segment
608
Spelling Numbers
369
Ο
302