12 Days of Christmas
407
Abundant Numbers
708
Arrows
554
Christmas Trees
624
Collatz
753
Diamonds
469
Divisors
932
Emirp Numbers
461
Evil Numbers
769
Evil Numbers (Long)
753
Fibonacci
605
934
805
Fizz Buzz
848
758
Foo Fizz Buzz Bar
637
Fractions
578
Intersection
579
ISBN
578
Leap Years
706
Look and Say
355
Niven Numbers
744
Niven Numbers (Long)
811
Number Spiral
383
Odious Numbers
783
Odious Numbers (Long)
765
Ordinal Numbers
683
Prime Numbers
577
Quine
946
φ
711
√2
759
𝑒
754