12 Days of Christmas
801
99 Bottles of Beer
817
Abundant Numbers
842
Arrows
739
CSS Colors
690
Diamonds
68
Divisors
875
Emirp Numbers
841
Evil Numbers
822
976
Fibonacci
917
947
Fizz Buzz
847
1,000
898
Happy Numbers
785
828
Leap Years
806851
872
573932
836
796
Leyland Numbers
787
Lucky Tickets
800
Morse Decoder
399
Morse Encoder
498
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
1,0009235001,0007226009825159636148931,0001,000579500720472969436179
Rule 110
566
Seven Segment
547
Spelling Numbers
850
United States
λ
200
608
16722110910289
π
789
τ
775
φ
236
√2
244
𝑒
234