12 Days of Christmas
313th
99 Bottles of Beer
498th
Abundant Numbers
291st
Arabic to Roman
285th
Christmas Trees
454th
Collatz
744th
Divisors
507th
Emirp Numbers
406th
Evil Numbers
515th
Fibonacci
486th1,438th
Fizz Buzz
66th
Foo Fizz Buzz Bar
1st
Happy Numbers
489th
Leap Years
229th
Niven Numbers
424th
Odious Numbers
317th
Ordinal Numbers
167th
Pangram Grep
356th
Pascal’s Triangle
197th
Pernicious Numbers
290th
Prime Numbers
269th
Prime Numbers (Long)
252nd
Quine
82nd
Recamán
296th
Roman to Arabic
206th
Seven Segment
299th
Spelling Numbers
69th
Time Distance
116th
π
511th
φ
182nd
√2
242nd