12 Days of Christmas
768
99 Bottles of Beer
421
Abundant Numbers
732586
577
628
Christmas Trees
470
Diamonds
291
Divisors
786816
567
704
Emirp Numbers
367
Evil Numbers
434
Fibonacci
476543
427
Fizz Buzz
751833951957696947
977563
Kolakoski Constant
68131
9669120
Leap Years
594
550
Niven Numbers
311
Odious Numbers
190
Prime Numbers
395
479
Recamán
556
π
100