12 Days of Christmas
168
99 Bottles of Beer
386
Abundant Numbers
214
Christmas Trees
84
Cubes
31
Diamonds
42
Divisors
26
Emirp Numbers
390
Evil Numbers
317
Fibonacci
616
Fizz Buzz
314
Happy Numbers
433
Leap Years
633
Niven Numbers
275
Odious Numbers
Pascal’s Triangle
48
Pernicious Numbers
199
Prime Numbers
351
Rule 110
4
Sierpiński Triangle
84
United States
101
λ
175
π
50
τ
49
φ
44
√2
45
𝑒
37