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
830
989
891
Happy Numbers
760
812
Leap Years
779814
816
861912
803
784
Leyland Numbers
751
Lucky Tickets
742
Morse Decoder
387
Morse Encoder
479
Niven Numbers
972
918
Odious Numbers
796
783
Ordinal Numbers
908
Pangram Grep
Pascalβs Triangle
756
Pernicious Numbers
671
766
Prime Numbers
971
834
Quine
967861479940683555911487602899866940944533478678448946417857
Rule 110
544
Seven Segment
535
Spelling Numbers
801
United States
Ξ»
186
590
1552051069986
Ο
765
Ο
743
Ο
225
β2
234
π
224