12 Days of Christmas
323rd
99 Bottles of Beer
160th
Abundant Numbers
53rd
Arrows
42nd
CSS Colors
51st
Diamonds
144th
Divisors
78th
Emirp Numbers
42nd
Evil Numbers
70th
109th
Fibonacci
156th
152nd
Fizz Buzz
197th
1st
51st
Happy Numbers
43rd
46th
Leap Years
147th65th
28th
46th93rd
48th
281st
Leyland Numbers
97th
Lucky Tickets
43rd
Morse Decoder
74th
Morse Encoder
86th
Niven Numbers
1st
117th
Odious Numbers
68th
249th
Ordinal Numbers
63rd
Pangram Grep
Pascalβs Triangle
60th
Pernicious Numbers
58th
133rd
Prime Numbers
1st
304th
Quine
1st25th90th1st74th22nd50th114th25th51st28th1st1st41st110th43rd35th56th39th95th
Rule 110
87th
Seven Segment
132nd
Spelling Numbers
81st
United States
Ξ»
42nd
54th
33rd42nd37th120th14th
Ο
45th
Ο
45th
Ο
62nd
β2
70th
π
70th