12 Days of Christmas
331st
99 Bottles of Beer
516th
Abundant Numbers
300th
Arabic to Roman
296th
Christmas Trees
461st
Collatz
762nd
Divisors
521st
Emirp Numbers
413th
Evil Numbers
531st
Fibonacci
497th1,474th
Fizz Buzz
83rd
Foo Fizz Buzz Bar
1st
Happy Numbers
498th
Leap Years
238th
Niven Numbers
433rd
Odious Numbers
331st
Ordinal Numbers
175th
Pangram Grep
364th
Pascal’s Triangle
201st
Pernicious Numbers
298th
Prime Numbers
279th
Prime Numbers (Long)
262nd
Quine
90th
Recamán
308th
Roman to Arabic
213th
Seven Segment
307th
Spelling Numbers
71st
Time Distance
121st
π
523rd
φ
191st
√2
254th