99 Bottles of Beer
470th
Abundant Numbers
276th
Arabic to Roman
352nd
Christmas Trees
39th
Diamonds
46th
Divisors
393rd
Emirp Numbers
148th
Evil Numbers
242nd
Fibonacci
157th
Fizz Buzz
115th
Happy Numbers
228th
Leap Years
12th
12th
12th
Look and Say
215th
Niven Numbers
286th
Odious Numbers
135th
Ordinal Numbers
185th
Pangram Grep
48th
Pascal’s Triangle
129th
Pernicious Numbers
168th
Prime Numbers
440th
Quine
70th243rd
118th
279th
57th167th124th
Recamán
251st
Roman to Arabic
300th
Seven Segment
73rd
Tongue-twisters
90th
π
120th
φ
148th
√2
9th
17th12th
33rd
7th33rd16th39th1st
13th7th13th