12 Days of Christmas
791
99 Bottles of Beer
803
Abundant Numbers
818
Arrows
700
CSS Colors
653
Diamonds
65
Divisors
856
Emirp Numbers
814
Evil Numbers
798
957
Fibonacci
899
934
Fizz Buzz
829
989
891
Happy Numbers
759
812
Leap Years
779
814
815
861
912
820
784
Leyland Numbers
751
Lucky Tickets
742
Morse Decoder
386
Morse Encoder
479
Niven Numbers
972
918
Odious Numbers
796
783
Ordinal Numbers
908
Pangram Grep
Pascal’s Triangle
756
Pernicious Numbers
671
766
Prime Numbers
971
834
Quine
966
861
479
939
554
911
487
602
898
865
940
683
944
533
478
678
448
946
417
857
Rule 110
544
Seven Segment
535
Spelling Numbers
801
United States
λ
186
590
155
205
106
99
86
π
765
τ
743
φ
225
√2
234
𝑒
224