12 Days of Christmas
425
99 Bottles of Beer
765
Abundant Numbers
813
Arrows
499
CSS Colors
413
Diamonds
64
Divisors
848
Emirp Numbers
668
Evil Numbers
797
956
Fibonacci
895
932
Fizz Buzz
829
987
973
Happy Numbers
792
888
Leap Years
764784
806
538887
782
783
Leyland Numbers
291
Lucky Tickets
267
Morse Decoder
143
Morse Encoder
181
Niven Numbers
964
913
Odious Numbers
792
781
Ordinal Numbers
911
Pangram Grep
Pascal’s Triangle
752
Pernicious Numbers
665
763
Prime Numbers
970
834
Quine
962863479941681554916486898576864938945534476676444945413854
Rule 110
212
Seven Segment
181
Spelling Numbers
379
United States
λ
501
222
159491174146147
π
764
τ
740
φ
67
√2
69
𝑒
67