12 Days of Christmas
748
Abundant Numbers
660
822
Abundant Numbers (Long)
784
863
Arithmetic Numbers
862
504
Arrows
475
Catalan Numbers
929
Collatz
898
780
Divisors
731
984
944
Emirp Numbers
450
Evil Numbers
892
877
623
Evil Numbers (Long)
867
856
Farey Sequence
666
Fibonacci
931
934
850
Fizz Buzz
960
773
192
Foo Fizz Buzz Bar
889
Fractions
773
Happy Numbers
682
549
Intersection
795
Kolakoski Sequence
879
522
Leap Years
799
815
Leyland Numbers
688
681
ln 2
625
Look and Say
118
Niven Numbers
787
Niven Numbers (Long)
871
Odious Numbers
870
888
605
Odious Numbers (Long)
812
812
Pascal’s Triangle
923
Pernicious Numbers
797
701
512
Pernicious Numbers (Long)
600
Prime Numbers
831
891
881
Prime Numbers (Long)
929
925
Quine
945
Recamán
684
Van Eck Sequence
914
Zeckendorf Representation
654
φ
905
√2
814
𝑒
634