12 Days of Christmas
429
99 Bottles of Beer
771
Abundant Numbers
842
Arrows
521
CSS Colors
437
Diamonds
68
Divisors
875
Emirp Numbers
695
Evil Numbers
822
976
Fibonacci
917
947
Fizz Buzz
847
1,000
983
Happy Numbers
827
912
Leap Years
806821
862
564909
818
796
Leyland Numbers
308
Lucky Tickets
289
Morse Decoder
148
Morse Encoder
187
Niven Numbers
1,000
936
Odious Numbers
822
800
Ordinal Numbers
943
Pangram Grep
Pascal’s Triangle
788
Pernicious Numbers
694
784
Prime Numbers
1,000
851
Quine
1,0009235001,0007226009825159636148931,0001,000579500720472969436893
Rule 110
224
Seven Segment
186
Spelling Numbers
403
United States
λ
544
227
167533174149153
π
789
τ
775
φ
71
√2
73
𝑒
70