12 Days of Christmas
69
99 Bottles of Beer
201
Abundant Numbers
172
Arrows
175
ASCII Table
180
Catalan Numbers
117
Christmas Trees
86
Collatz
107
Diamonds
107
Divisors
44
Emirp Numbers
228
Emojify
142
Evil Numbers
168
Fibonacci
86
Fizz Buzz
103
Foo Fizz Buzz Bar
121
Fractions
150
Happy Numbers
233
Happy Numbers (Long)
170
Hexdump
126
Leap Years
96
Leyland Numbers
288
Look and Say
549
Lucky Tickets
136
Niven Numbers
187
Number Spiral
250
Odious Numbers
163
Ordinal Numbers
134
Pangram Grep
100
Pascal’s Triangle
103
Pernicious Numbers
164
Prime Numbers
186
Prime Numbers (Long)
61
Recamán
109
Rule 110
175
Sierpiński Triangle
153
Smith Numbers
166
Tongue-twisters
341
United States
123
Vampire Numbers
329
Van Eck Sequence
301
Zodiac Signs
191
λ
668
π
155
τ
146
φ
106
√2
169
𝑒
194