99 Bottles of Beer
522nd
Abundant Numbers
312th
Arabic to Roman
401st
Christmas Trees
41st
Diamonds
50th
Divisors
423rd
Emirp Numbers
164th
Evil Numbers
268th
Fibonacci
184th
Fizz Buzz
134th
Happy Numbers
254th
Leap Years
33rd
12th
14th
Look and Say
240th
Niven Numbers
312th
Odious Numbers
152nd
Ordinal Numbers
205th
Pangram Grep
59th
Pascal’s Triangle
145th
Pernicious Numbers
193rd
Prime Numbers
474th
Quine
72nd256th
123rd
295th
72nd187th130th
Recamán
275th
Roman to Arabic
331st
Seven Segment
82nd
Tongue-twisters
103rd
π
140th
φ
171st
√2
10th
18th12th
41st
7th38th18th40th1st
16th9th14th