12 Days of Christmas
323rd
99 Bottles of Beer
160th
Abundant Numbers
53rd
Arrows
44th
CSS Colors
51st
Diamonds
145th
Divisors
78th
Emirp Numbers
42nd
Evil Numbers
70th
111th
Fibonacci
157th
154th
Fizz Buzz
198th
1st
52nd
Happy Numbers
43rd
46th
Leap Years
149th66th
28th
46th93rd
48th
283rd
Leyland Numbers
97th
Lucky Tickets
43rd
Morse Decoder
76th
Morse Encoder
87th
Niven Numbers
1st
119th
Odious Numbers
68th
255th
Ordinal Numbers
64th
Pangram Grep
Pascalβs Triangle
60th
Pernicious Numbers
58th
133rd
Prime Numbers
1st
308th
Quine
1st25th93rd1st76th22nd50th115th25th53rd28th1st1st41st111th44th35th56th39th96th
Rule 110
87th
Seven Segment
132nd
Spelling Numbers
83rd
United States
Ξ»
43rd
54th
34th42nd37th125th14th
Ο
45th
Ο
46th
Ο
62nd
β2
70th
π
70th