12 Days of Christmas
409
Abundant Numbers
721
Arrows
569
Christmas Trees
635
Collatz
770
Diamonds
479
Divisors
947
Emirp Numbers
470
Evil Numbers
784
Evil Numbers (Long)
774
Fibonacci
633
947
842
Fizz Buzz
855
783
Foo Fizz Buzz Bar
647
Fractions
596
Intersection
598
ISBN
597
Leap Years
717
Look and Say
364
Niven Numbers
759
Niven Numbers (Long)
833
Number Spiral
396
Odious Numbers
800
Odious Numbers (Long)
788
Ordinal Numbers
702
Prime Numbers
588
Quine
969
φ
732
√2
778
𝑒
774