12 Days of Christmas
76
99 Bottles of Beer
228
Abundant Numbers
189
Arrows
206
ASCII Table
204
Catalan Numbers
127
Christmas Trees
96
Collatz
120
Diamonds
124
Divisors
46
Emirp Numbers
246
Emojify
158
Evil Numbers
183
Fibonacci
87
Fizz Buzz
107
Foo Fizz Buzz Bar
137
Fractions
183
Happy Numbers
253
Happy Numbers (Long)
195
Hexdump
149
Leap Years
105
Leyland Numbers
337
Look and Say
653
Lucky Tickets
166
Niven Numbers
206
Number Spiral
291
Odious Numbers
177
Ordinal Numbers
152
Pangram Grep
120
Pascal’s Triangle
115
Pernicious Numbers
180
Prime Numbers
204
Prime Numbers (Long)
67
Recamán
123
Rule 110
201
Sierpiński Triangle
174
Smith Numbers
194
Tongue-twisters
385
United States
141
Vampire Numbers
386
Van Eck Sequence
356
Zodiac Signs
228
λ
768
π
172
τ
162
φ
118
√2
192
𝑒
194