99 Bottles of Beer
506th
Abundant Numbers
275th
Arabic to Roman
401st
Christmas Trees
87th
Diamonds
78th
Divisors
394th
Emirp Numbers
222nd
Evil Numbers
269th
Fibonacci
187th
Fizz Buzz
58th
Happy Numbers
227th
Leap Years
35th
12th
14th
Look and Say
237th
Niven Numbers
305th
Odious Numbers
153rd
Ordinal Numbers
183rd
Pangram Grep
60th
Pascal’s Triangle
126th
Pernicious Numbers
228th
Prime Numbers
458th
Quine
71st251st
125th
297th
72nd175th129th
Recamán
273rd
Roman to Arabic
333rd
Seven Segment
254th
Tongue-twisters
377th
π
127th
φ
144th
√2
10th
18th12th
41st
7th38th17th40th1st
15th9th14th