12 Days of Christmas
363
Abundant Numbers
707
Abundant Numbers (Long)
947
Arithmetic Numbers
743
Ascending Primes
582
Catalan Numbers
566
Catalan’s Constant
82
Collatz
768
Divisors
811
Emirp Numbers
336
Emirp Numbers (Long)
639
Evil Numbers
840518
Evil Numbers (Long)
923535
Factorial Factorisation
124
Farey Sequence
487
Fibonacci
650
Fizz Buzz
753659505
Foo Fizz Buzz Bar
677710
Fractions
949
Happy Numbers
269
Happy Numbers (Long)
441
Leap Years
704
Look and Say
664
Medal Tally
426
Niven Numbers
588
Niven Numbers (Long)
841
Odious Numbers
857536
Odious Numbers (Long)
960549
Pangram Grep
579
Pernicious Numbers
783
Pernicious Numbers (Long)
803
Prime Numbers
627
Prime Numbers (Long)
841
Quine
656
Recamán
592
Time Distance
430
Tongue-twisters
269
United States
208
π