12 Days of Christmas
405
Abundant Numbers
707
Abundant Numbers (Long)
947
Arithmetic Numbers
770
Ascending Primes
678
Catalan Numbers
566
Catalan’s Constant
213
Collatz
798
Divisors
851
Emirp Numbers
336
Emirp Numbers (Long)
708
Evil Numbers
840857
Evil Numbers (Long)
923868
Factorial Factorisation
162
Farey Sequence
487
Fibonacci
650
Fizz Buzz
753941505
Foo Fizz Buzz Bar
677902
Fractions
949
Happy Numbers
269
Happy Numbers (Long)
463
Leap Years
761
Look and Say
681
Medal Tally
442
Niven Numbers
588
Niven Numbers (Long)
902
Odious Numbers
857875
Odious Numbers (Long)
960876
Pangram Grep
609
Pernicious Numbers
783
Pernicious Numbers (Long)
803
Prime Numbers
627
Prime Numbers (Long)
841
Quine
656
Recamán
615
Time Distance
545
Tongue-twisters
279
United States
230
π