12 Days of Christmas
356
Abundant Numbers
612356686527
Christmas Trees
669
Collatz
803
727
Cubes
251
DFA Simulator
443
Divisors
505674
Emirp Numbers
341
Evil Numbers
432754
Fibonacci
514609
611
Fizz Buzz
693359846
Foo Fizz Buzz Bar
415
Happy Numbers
426
ISBN
660
Leap Years
449
Niven Numbers
651
Odious Numbers
781
Pernicious Numbers
348
Prime Numbers
646224577
Proximity Grid
395
Quine
479
946
Recamán
424
Reverse Polish Notation
394
√2
486
𝑒
524