12 Days of Christmas
338th
99 Bottles of Beer
166th
Abundant Numbers
55th
Arrows
44th
CSS Colors
52nd
Diamonds
150th
Divisors
81st
Emirp Numbers
42nd
Evil Numbers
70th
120th
Fibonacci
163rd
163rd
Fizz Buzz
207th
1st
54th
Happy Numbers
44th
51st
Leap Years
155th67th
29th
46th97th
49th
296th
Leyland Numbers
102nd
Lucky Tickets
45th
Morse Decoder
77th
Morse Encoder
90th
Niven Numbers
1st
127th
Odious Numbers
68th
272nd
Ordinal Numbers
66th
Pangram Grep
Pascal’s Triangle
62nd
Pernicious Numbers
60th
146th
Prime Numbers
1st
325th
Quine
1st25th99th1st80th25th53rd118th4th56th29th1st1st43rd117th46th36th63rd40th99th
Rule 110
94th
Seven Segment
139th
Spelling Numbers
87th
United States
λ
44th
61st
35th45th38th136th14th
π
46th
τ
47th
φ
68th
√2
78th
𝑒
79th