12 Days of Christmas
555
Abundant Numbers
778
833
Abundant Numbers (Long)
714
929
Arithmetic Numbers
756
551
Arrows
578
Catalan Numbers
957
Collatz
919
830
Divisors
756
947
1,000
Emirp Numbers
556
Evil Numbers
909
933
699
Evil Numbers (Long)
891
924
Farey Sequence
611
Fibonacci
938
947
889
Fizz Buzz
883
797
209
Foo Fizz Buzz Bar
717
Fractions
859
Happy Numbers
539
606
Intersection
868
Kolakoski Sequence
912
580
Leap Years
811
857
Leyland Numbers
602
755
ln 2
634
Look and Say
136
Niven Numbers
800
Niven Numbers (Long)
893
Odious Numbers
889
951
680
Odious Numbers (Long)
837
884
Pascal’s Triangle
926
Pernicious Numbers
816
753
579
Pernicious Numbers (Long)
607
Prime Numbers
850
909
938
Prime Numbers (Long)
957
1,000
Quine
969
Recamán
632
Van Eck Sequence
898
Zeckendorf Representation
764
φ
963
√2
831
𝑒
649