99 Bottles of Beer
503rd
Abundant Numbers
271st
Arabic to Roman
395th
Christmas Trees
86th
Diamonds
76th
Divisors
393rd
Emirp Numbers
221st
Evil Numbers
267th
Fibonacci
184th
Fizz Buzz
58th
Happy Numbers
227th
Leap Years
33rd
12th
14th
Look and Say
228th
Niven Numbers
302nd
Odious Numbers
152nd
Ordinal Numbers
183rd
Pangram Grep
59th
Pascal’s Triangle
125th
Pernicious Numbers
222nd
Prime Numbers
452nd
Quine
72nd256th
123rd
295th
72nd187th130th
Recamán
270th
Roman to Arabic
331st
Seven Segment
252nd
Tongue-twisters
372nd
π
125th
φ
142nd
√2
10th
18th12th
41st
7th38th17th39th1st
15th9th14th