12 Days of Christmas
413
99 Bottles of Beer
762
Abundant Numbers
813
Arrows
493
CSS Colors
404
Diamonds
64
Divisors
848
Emirp Numbers
668
Evil Numbers
797
957
Fibonacci
896
932
Fizz Buzz
828
986
973
Happy Numbers
792
888
Leap Years
778785
806
538888
783
783
Leyland Numbers
291
Lucky Tickets
268
Morse Decoder
126
Morse Encoder
179
Niven Numbers
964
914
Odious Numbers
793
781
Ordinal Numbers
908
Pangram Grep
Pascal’s Triangle
752
Pernicious Numbers
665
763
Prime Numbers
970
834
Quine
962864479941681554916486932413864938945534477676444945413854
Rule 110
212
Seven Segment
171
Spelling Numbers
376
United States
λ
500
220
158490165146146
π
764
τ
740
φ
67
√2
69
𝑒
67