12 Days of Christmas
167
99 Bottles of Beer
384
Abundant Numbers
214
Christmas Trees
84
Cubes
30
Diamonds
42
Divisors
26
Emirp Numbers
390
Evil Numbers
318
Fibonacci
616
Fizz Buzz
314
Happy Numbers
433
Leap Years
634
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
167
π
47
τ
50
φ
38
√2
41
𝑒
35