99 Bottles of Beer
445th
Abundant Numbers
234th
Arabic to Roman
337th
Christmas Trees
78th
Diamonds
65th
Divisors
362nd
Emirp Numbers
194th
Evil Numbers
240th
Fibonacci
153rd
Fizz Buzz
51st
Happy Numbers
205th
Leap Years
12th
12th
12th
Look and Say
201st
Niven Numbers
268th
Odious Numbers
132nd
Ordinal Numbers
159th
Pangram Grep
44th
Pascal’s Triangle
105th
Pernicious Numbers
187th
Prime Numbers
410th
Quine
68th236th
117th
279th
56th165th119th
Recamán
241st
Roman to Arabic
294th
Seven Segment
231st
Tongue-twisters
328th
π
96th
φ
116th
√2
9th
17th12th
33rd
7th33rd15th38th1st
12th7th11th