12 Days of Christmas
782
Abundant Numbers
612356713548
Christmas Trees
768
Collatz
803
831
Cubes
364
DFA Simulator
651
Divisors
505725
Emirp Numbers
414
Evil Numbers
432754
Fibonacci
525609
611
Fizz Buzz
694359926
Foo Fizz Buzz Bar
419
Happy Numbers
549
ISBN
844
Leap Years
450
Niven Numbers
650
Odious Numbers
781
Pernicious Numbers
348
Prime Numbers
645224577
Proximity Grid
571
Quine
479
945
Recamán
469
Reverse Polish Notation
543
√2
496
𝑒
535