12 Days of Christmas
48th
99 Bottles of Beer
48th
Abundant Numbers
54th
Arrows
40th
CSS Colors
28th
Diamonds
150th
Divisors
81st
Emirp Numbers
16th
Evil Numbers
70th
118th
Fibonacci
160th
161st
Fizz Buzz
205th
1st
193rd
Happy Numbers
17th
41st
Leap Years
154th71st
30th
48th96th
49th
299th
Leyland Numbers
19th
Lucky Tickets
19th
Morse Decoder
47th
Morse Encoder
42nd
Niven Numbers
1st
124th
Odious Numbers
68th
270th
Ordinal Numbers
64th
Pangram Grep
Pascalβs Triangle
62nd
Pernicious Numbers
60th
142nd
Prime Numbers
1st
320th
Quine
1st25th97th1st79th25th52nd117th4th56th29th1st1st42nd116th45th36th63rd41st99th
Rule 110
55th
Seven Segment
79th
Spelling Numbers
18th
United States
Ξ»
44th
26th
35th44th39th142nd14th
Ο
46th
Ο
47th
Ο
65th
β2
75th
π
76th