12 Days of Christmas
368
Abundant Numbers
616359688529
Christmas Trees
672
Collatz
810
755
Cubes
263
DFA Simulator
444
Divisors
510691
Emirp Numbers
342
Evil Numbers
433755
Fibonacci
515613
612
Fizz Buzz
696360848
Foo Fizz Buzz Bar
418
Happy Numbers
428
ISBN
663
Leap Years
451
Niven Numbers
654
Odious Numbers
784
Pernicious Numbers
349
Prime Numbers
646224577
Proximity Grid
406
Quine
480
946
Recamán
427
Reverse Polish Notation
393
√2
499
𝑒
538