12 Days of Christmas
174
99 Bottles of Beer
390
17
Abundant Numbers
291
Christmas Trees
111
Diamonds
60
Divisors
416
Emirp Numbers
459
Evil Numbers
500
Fibonacci
336
Fizz Buzz
288
400
Happy Numbers
521
Leap Years
377
Niven Numbers
333
Odious Numbers
500
Ordinal Numbers
Pascal’s Triangle
69
Pernicious Numbers
250
175
357
Prime Numbers
333320
Quine
1,0004405134268546308934921,000482477783969436893
Sierpiński Triangle
104
λ
248
172
558
167534162179
π
84
59
110
25946446
τ
88
61
110
27946446
φ
58
49
109
31925227
√2
55
51
112
27954832
𝑒
59
49
89
26654732