12 Days of Christmas
791
99 Bottles of Beer
803
Abundant Numbers
818
Arrows
708
CSS Colors
653
Diamonds
65
Divisors
856
Emirp Numbers
815
Evil Numbers
799
957
Fibonacci
899
934
Fizz Buzz
830
989
891
Happy Numbers
760
812
Leap Years
779814
816
862912
803
784
Leyland Numbers
751
Lucky Tickets
742
Morse Decoder
387
Morse Encoder
479
Niven Numbers
972
918
Odious Numbers
797
783
Ordinal Numbers
908
Pangram Grep
Pascalβs Triangle
756
Pernicious Numbers
671
766
Prime Numbers
971
835
Quine
967861479940683555913487602899866940944533479678448946417857
Rule 110
544
Seven Segment
524
Spelling Numbers
801
United States
Ξ»
186
586
15620510610086
Ο
765
Ο
743
Ο
225
β2
234
π
224