12 Days of Christmas
173
99 Bottles of Beer
384
17
Abundant Numbers
292
Christmas Trees
120
Diamonds
59
Divisors
409
Emirp Numbers
450
Evil Numbers
490
Fibonacci
332
Fizz Buzz
271
397
Happy Numbers
510
Leap Years
371
Niven Numbers
328
Odious Numbers
489
Pascal’s Triangle
67
Pernicious Numbers
237
168
349
Prime Numbers
316
314
Quine
966
410
503
807
601
865
462
402
943
444
456
735
945
416
856Sierpiński Triangle
100
λ
226
167
510
161
490
159
171
π
77
57
102
25
97
63
45
τ
79
59
100
27
100
62
44
φ
52
47
100
30
85
51
26
√2
50
49
102
27
100
47
31
𝑒
54
48
83
25
65
46
31