12 Days of Christmas
770
Abundant Numbers
671
869
Abundant Numbers (Long)
805
929
Arithmetic Numbers
890
551
Arrows
490
Catalan Numbers
957
Collatz
919
830
Divisors
756
1,000
1,000
Emirp Numbers
459
Evil Numbers
909
933
699
Evil Numbers (Long)
891
924
Farey Sequence
695
Fibonacci
958
947
889
Fizz Buzz
967
797
209
Foo Fizz Buzz Bar
902
Fractions
800
Happy Numbers
697
606
Intersection
824
Kolakoski Sequence
912
580
Leap Years
811
857
Leyland Numbers
709
755
ln 2
646
Look and Say
136
Niven Numbers
800
Niven Numbers (Long)
893
Odious Numbers
889
951
680
Odious Numbers (Long)
837
884
Pascal’s Triangle
947
Pernicious Numbers
816
753
579
Pernicious Numbers (Long)
619
Prime Numbers
867
909
938
Prime Numbers (Long)
957
1,000
Quine
969
Recamán
701
Van Eck Sequence
949
Zeckendorf Representation
691
φ
930
√2
831
𝑒
649