12 Days of Christmas
529
Abundant Numbers
764
786
Abundant Numbers (Long)
695
858
Arithmetic Numbers
735
504
Arrows
563
Catalan Numbers
929
Collatz
899
777
Divisors
731
932
944
Emirp Numbers
545
Evil Numbers
892
877
623
Evil Numbers (Long)
867
856
Farey Sequence
587
Fibonacci
911
934
850
Fizz Buzz
876
771
190
Foo Fizz Buzz Bar
706
Fractions
831
Happy Numbers
529
546
Intersection
840
Kolakoski Sequence
879
522
Leap Years
799
814
Leyland Numbers
586
680
ln 2
613
Look and Say
118
Niven Numbers
784
Niven Numbers (Long)
869
Odious Numbers
870
888
605
Odious Numbers (Long)
812
812
Pascal’s Triangle
902
Pernicious Numbers
797
701
512
Pernicious Numbers (Long)
589
Prime Numbers
815
891
881
Prime Numbers (Long)
929
925
Quine
945
Recamán
618
Van Eck Sequence
866
Zeckendorf Representation
730
φ
934
√2
811
𝑒
632