99 Bottles of Beer
528th
Abundant Numbers
318th
Arabic to Roman
408th
Christmas Trees
44th
Diamonds
50th
Divisors
425th
Emirp Numbers
172nd
Evil Numbers
275th
Fibonacci
189th
Fizz Buzz
135th
Happy Numbers
257th
Leap Years
36th
12th
16th
Look and Say
253rd
Niven Numbers
318th
Odious Numbers
156th
Ordinal Numbers
207th
Pangram Grep
60th
Pascal’s Triangle
147th
Pernicious Numbers
204th
Prime Numbers
485th
Quine
74th257th
126th
299th
74th177th130th
Recamán
281st
Roman to Arabic
336th
Seven Segment
86th
Tongue-twisters
106th
π
147th
φ
173rd
√2
10th
18th12th
41st
7th38th18th41st1st
16th9th14th