12 Days of Christmas
889
Abundant Numbers
750
Arrows
533
Christmas Trees
729
Collatz
919
Diamonds
573
Divisors
1,000
Emirp Numbers
581
Evil Numbers
784
Evil Numbers (Long)
774
Fibonacci
633947842
Fizz Buzz
935783
Foo Fizz Buzz Bar
814
Fractions
702
Intersection
818
ISBN
765
Leap Years
717
Look and Say
448
Niven Numbers
759
Niven Numbers (Long)
833
Number Spiral
488
Odious Numbers
800
Odious Numbers (Long)
788
Ordinal Numbers
862
Prime Numbers
588
Quine
969
φ
746
√2
778
𝑒
774