12 Days of Christmas
80
99 Bottles of Beer
294
10
Abundant Numbers
280
Christmas Trees
99
Diamonds
50
Divisors
394
Emirp Numbers
372
Evil Numbers
500
Fibonacci
336
Fizz Buzz
288
366
Happy Numbers
403
Leap Years
377
Niven Numbers
333
Odious Numbers
500
Pascal’s Triangle
64
Pernicious Numbers
245
175
357
Prime Numbers
333
320
Quine
1,000
440
500
854
630
893
492
426
1,000
482
477
783
969
436
893Sierpiński Triangle
134
λ
248
129
216
167
221
102
89
π
84
59
110
25
82
57
39
τ
88
61
110
27
109
57
40
φ
58
49
109
31
77
51
25
√2
55
51
112
27
109
48
29
𝑒
59
49
89
26
69
47
29