12 Days of Christmas
417
Abundant Numbers
752
Abundant Numbers (Long)
824
Arithmetic Numbers
785
Christmas Trees
727
Collatz
764
Diamonds
532
Divisors
799933
Evil Numbers
872
Evil Numbers (Long)
850
Factorial Factorisation
570
Fibonacci
934786
Fizz Buzz
940
891
Fractions
771
Intersection
588
Leap Years
830
Look and Say
580
Niven Numbers
863
Niven Numbers (Long)
886
Odious Numbers
851
Odious Numbers (Long)
848
Pascalβs Triangle
855
Pernicious Numbers
766
Prime Numbers
892
Prime Numbers (Long)
951
ROT13
794
Set
628
Smith Numbers
580
Tic-tac-toe
569
Ξ»
100