12 Days of Christmas
370
Abundant Numbers
652369700560
Christmas Trees
684
Collatz
859
770
Cubes
267
DFA Simulator
460
Divisors
521701
Emirp Numbers
348
Evil Numbers
446769
Fibonacci
529636
621
Fizz Buzz
721364855
Foo Fizz Buzz Bar
447
Happy Numbers
436
ISBN
683
Leap Years
457
Niven Numbers
667
Odious Numbers
800
Pernicious Numbers
357
Prime Numbers
683231588
Proximity Grid
423
Quine
500
969
Recamán
437
Reverse Polish Notation
414
√2
510
𝑒
552