12 Days of Christmas
425
99 Bottles of Beer
769
Abundant Numbers
822
Arrows
502
CSS Colors
413
Diamonds
65
Divisors
856
Emirp Numbers
672
Evil Numbers
799
958
Fibonacci
900
935
Fizz Buzz
833
992
977
Happy Numbers
800
894
Leap Years
782789
810
541892
788
785
Leyland Numbers
295
Lucky Tickets
271
Morse Decoder
144
Morse Encoder
182
Niven Numbers
977
922
Odious Numbers
798
784
Ordinal Numbers
915
Pangram Grep
Pascal’s Triangle
757
Pernicious Numbers
671
767
Prime Numbers
972
835
Quine
968864480943685556917488905577867943947535479679449947417858
Rule 110
216
Seven Segment
183
Spelling Numbers
385
United States
λ
503
224
161493176147148
π
767
τ
745
φ
68
√2
71
𝑒
68