12 Days of Christmas
65th
Abundant Numbers
175th
Abundant Numbers (Long)
148th
Arabic to Roman
19th
Arithmetic Numbers
134th
Ascending Primes
96th
Catalan Numbers
156th
Christmas Trees
242nd
Collatz
349th
Day of Week
178th
Divisors
420th
Evil Numbers
1st
Evil Numbers (Long)
48th
Farey Sequence
158th
Fibonacci
68th213th
Fizz Buzz
90th730th
Foo Fizz Buzz Bar
321st
Fractions
76th
Happy Numbers
218th
Happy Numbers (Long)
128th
ISBN
83rd
Leap Years
458th
Look and Say
97th
Lucky Numbers
104th
Niven Numbers
329th
Niven Numbers (Long)
130th
Odious Numbers
176th
Odious Numbers (Long)
126th
Ordinal Numbers
7th
Pangram Grep
196th
Pascal’s Triangle
93rd
Pernicious Numbers
163rd
Pernicious Numbers (Long)
114th
Prime Numbers
71st
Prime Numbers (Long)
219th
Quine
1st92nd
Roman to Arabic
118th
Tongue-twisters
118th
Vampire Numbers
80th