12 Days of Christmas
796
Abundant Numbers
621360718554
Christmas Trees
773
Collatz
816
836
Cubes
375
DFA Simulator
655
Divisors
510729
Emirp Numbers
416
Evil Numbers
433755
Fibonacci
527614
613
Fizz Buzz
700361929
Foo Fizz Buzz Bar
424
Happy Numbers
552
ISBN
849
Leap Years
451
Niven Numbers
656
Odious Numbers
784
Pernicious Numbers
349
Prime Numbers
647224577
Proximity Grid
578
Quine
492
947
Recamán
473
Reverse Polish Notation
542
√2
501
𝑒
540