12 Days of Christmas
912
Abundant Numbers
761
Abundant Numbers (Long)
903
Arabic to Roman
874
Arithmetic Numbers
877
Ascending Primes
524
Catalan Numbers
892
Christmas Trees
709
Collatz
889
Day of Week
824
Divisors
905
Evil Numbers
982
Evil Numbers (Long)
952
Farey Sequence
573
Fibonacci
603935
Fizz Buzz
718945
Foo Fizz Buzz Bar
910
Fractions
944
Happy Numbers
723
Happy Numbers (Long)
823
ISBN
840
Leap Years
757
Look and Say
774
Lucky Numbers
708
Niven Numbers
787
Niven Numbers (Long)
873
Odious Numbers
852
Odious Numbers (Long)
849
Ordinal Numbers
907
Pangram Grep
865
Pascal’s Triangle
924
Pernicious Numbers
782
Pernicious Numbers (Long)
829
Prime Numbers
957
Prime Numbers (Long)
702
Quine
967946
Roman to Arabic
699
Tongue-twisters
716
Vampire Numbers
797