12 Days of Christmas
234
99 Bottles of Beer
342
Abundant Numbers
721
Abundant Numbers (Long)
797
Arabic to Roman
402
Arithmetic Numbers
608
Arrows
214
Ascending Primes
111
ASCII Table
243
Catalan Numbers
657
Collatz
663
CSS Colors
78
Day of Week
567
Divisors
844
Emirp Numbers
495
Emirp Numbers (Long)
563
Emojify
272
Evil Numbers
784
Evil Numbers (Long)
759
Farey Sequence
326
Fibonacci
800
Fizz Buzz
855
Foo Fizz Buzz Bar
725
Fractions
484
Happy Numbers
384
Happy Numbers (Long)
415
Leap Years
652
Look and Say
390
Morse Decoder
123
Morse Encoder
159
Niven Numbers
733
Niven Numbers (Long)
806
Number Spiral
208
Odious Numbers
800
Odious Numbers (Long)
804
Pangram Grep
701
Pascal’s Triangle
64
143
Pernicious Numbers
465
Pernicious Numbers (Long)
580
Prime Numbers
656
Prime Numbers (Long)
688
Quine
969
Roman to Arabic
418
Smith Numbers
494
Tongue-twisters
350
United States
94
π
92
102
130
130
104
104
123
84
66
90
100
60
69
51
148
149
27
66
140
162
59
30
48
110
147
182
192
25
78
52
53
57
114
39
42
154
380
223
147
74
281
117
145
162
163
𝑒
64
65
108
90
85
93
103
60
58
81
87
47
59
40
105
130
20
54
96
142
49
29
39
89
117
128
144
26
65
40
48
47
76
29
39
117
380
177
106
65
249
91
112
90
135