12 Days of Christmas
768
99 Bottles of Beer
421
Abundant Numbers
732586
578
629
Christmas Trees
471
Diamonds
292
Divisors
786817
567
704
Emirp Numbers
367
Evil Numbers
435
Fibonacci
476543
428
Fizz Buzz
751833951957696947
977563
Kolakoski Constant
68131
9669120
Leap Years
595
551
Niven Numbers
311
Odious Numbers
190
Prime Numbers
395
480
Recamán
556
π
100