12 Days of Christmas
717
Abundant Numbers
880
Abundant Numbers (Long)
961
Arithmetic Numbers
912
Ascending Primes
733
Catalan Numbers
657
Catalan’s Constant
553
Collatz
818
Divisors
851
Emirp Numbers
524
Emirp Numbers (Long)
806
Evil Numbers
960
866
Evil Numbers (Long)
942
877
Factorial Factorisation
163
Farey Sequence
494
Fibonacci
717
Fizz Buzz
753
941
552Foo Fizz Buzz Bar
827
902
Fractions
974
Happy Numbers
374
Happy Numbers (Long)
527
Leap Years
845
Look and Say
793
Medal Tally
541
Niven Numbers
675
Niven Numbers (Long)
939
Odious Numbers
980
875
Odious Numbers (Long)
980
876
Pangram Grep
624
Pernicious Numbers
833
Pernicious Numbers (Long)
831
Prime Numbers
701
Prime Numbers (Long)
870
Quine
656
Recamán
731
Time Distance
749
Tongue-twisters
490
United States
298
π
84