12 Days of Christmas
59th
Abundant Numbers
171st
Abundant Numbers (Long)
146th
Arabic to Roman
17th
Arithmetic Numbers
128th
Ascending Primes
92nd
Catalan Numbers
147th
Christmas Trees
236th
Collatz
334th
Day of Week
169th
Divisors
409th
Evil Numbers
1st
Evil Numbers (Long)
43rd
Farey Sequence
148th
Fibonacci
67th197th
Fizz Buzz
90th709th
Foo Fizz Buzz Bar
303rd
Fractions
68th
Happy Numbers
213th
Happy Numbers (Long)
123rd
ISBN
78th
Leap Years
447th
Look and Say
91st
Lucky Numbers
97th
Niven Numbers
320th
Niven Numbers (Long)
125th
Odious Numbers
165th
Odious Numbers (Long)
117th
Ordinal Numbers
7th
Pangram Grep
192nd
Pascal’s Triangle
89th
Pernicious Numbers
159th
Pernicious Numbers (Long)
107th
Prime Numbers
62nd
Prime Numbers (Long)
209th
Quine
1st83rd
Roman to Arabic
115th
Tongue-twisters
113th
Vampire Numbers
75th