12 Days of Christmas
705
Abundant Numbers
802
Abundant Numbers (Long)
873
Arithmetic Numbers
794
Ascending Primes
604
Catalan Numbers
510
Catalan’s Constant
474
Collatz
746
Divisors
776
Emirp Numbers
475
Emirp Numbers (Long)
684
Evil Numbers
868809
Evil Numbers (Long)
852801
Factorial Factorisation
146
Farey Sequence
447
Fibonacci
605
Fizz Buzz
714915549
Foo Fizz Buzz Bar
748856
Fractions
837
Happy Numbers
342
Happy Numbers (Long)
470
Leap Years
710
Look and Say
640
Medal Tally
477
Niven Numbers
621
Niven Numbers (Long)
850
Odious Numbers
887813
Odious Numbers (Long)
886797
Pangram Grep
554
Pernicious Numbers
753
Pernicious Numbers (Long)
760
Prime Numbers
633
Prime Numbers (Long)
780
Quine
591
Recamán
556
Time Distance
684
Tongue-twisters
447
United States
270
π
67