12 Days of Christmas
912
Abundant Numbers
797
Abundant Numbers (Long)
954
Arithmetic Numbers
948
Christmas Trees
849
Collatz
932
Diamonds
650
Divisors
8461,000
Evil Numbers
889
Evil Numbers (Long)
872
Factorial Factorisation
741
Fibonacci
947806
Fizz Buzz
960
983
Fractions
936
Intersection
831
Leap Years
843
Look and Say
733
Niven Numbers
880
Niven Numbers (Long)
909
Odious Numbers
870
Odious Numbers (Long)
872
Pascalβs Triangle
947
Pernicious Numbers
784
Prime Numbers
909
Prime Numbers (Long)
978
ROT13
958
Set
929
Smith Numbers
819
Tic-tac-toe
762
Ξ»
162