12 Days of Christmas
148
66165
66
99 Bottles of Beer
16
8
Abundant Numbers
167
Christmas Trees
70
Divisors
518
Emirp Numbers
261
Evil Numbers
270
Fibonacci
114
Fizz Buzz
318285158270
219215
Happy Numbers
277
Leap Years
306
30
Odious Numbers
260
Pascal’s Triangle
28
Pernicious Numbers
195
Prime Numbers
242
Quine
890
Rock-paper-scissors-Spock-lizard
190
Sierpiński Triangle
89
Smith Numbers
35
32
United States
67
Vampire Numbers
70
λ
86
π
228
38
τ
27
38
φ
94
24
√2
28
𝑒
28