12 Days of Christmas
174
99 Bottles of Beer
392
17
Abundant Numbers
297
Christmas Trees
122
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
Pascal’s Triangle
69
Pernicious Numbers
250
175
357
Prime Numbers
333
320
Quine
1,000
440
526
854
630
893
492
426
1,000
482
477
783
969
436
893
Sierpiński Triangle
102
λ
248
172
558
167
534
162
179
π
84
59
110
25
104
64
46
τ
88
61
110
27
109
64
46
φ
58
49
109
31
92
52
27
√2
55
51
112
27
109
48
32
𝑒
59
49
89
26
69
47
32