12 Days of Christmas
99 Bottles of Beer
Christmas Trees
Diamonds
Divisors
Emirp Numbers
Evil Numbers
Fibonacci
Fizz Buzz
Happy Numbers
Niven Numbers
Odious Numbers
Pangram Grep
Pernicious Numbers
Prime Numbers
Quine
Seven Segment
Spelling Numbers
λ
11th
14th
84th
17th
10th
29th
9th
43rd
116th
33rd
52nd
π
11th
30th
175th
80th
17th
37th
45th
71st
416th
66th
108th
τ
10th
19th
95th
68th
15th
27th
37th
36th
221st
37th
65th
φ
9th
28th
79th
66th
22nd
30th
34th
41st
296th
42nd
74th
𝑒
13th
30th
95th
68th
14th
32nd
35th
55th
330th
56th
91st