12 Days of Christmas
172
99 Bottles of Beer
370
17
Abundant Numbers
287
Christmas Trees
109
Diamonds
59
Divisors
410
Emirp Numbers
444
Evil Numbers
491
Fibonacci
332
Fizz Buzz
271
397
Happy Numbers
510
Leap Years
372
Niven Numbers
328
Odious Numbers
490
Ordinal Numbers
Pascal’s Triangle
67
Pernicious Numbers
238
169
349
Prime Numbers
317314
Quine
967411492404809904867464947446457738947417858
Sierpiński Triangle
99
λ
227
168
514
161493159172
π
77
58
114
25896345
τ
80
59
112
27876344
φ
53
48
111
30855126
√2
50
50
112
27884831
𝑒
54
48
89
26624631