12 Days of Christmas
396
Abundant Numbers
646
Abundant Numbers (Long)
857
Arithmetic Numbers
704
Ascending Primes
606
Catalan Numbers
512
Catalan’s Constant
188
Collatz
732
Divisors
777
Emirp Numbers
313
Emirp Numbers (Long)
634
Evil Numbers
765801
Evil Numbers (Long)
838794
Factorial Factorisation
145
Farey Sequence
443
Fibonacci
605
Fizz Buzz
707914501
Foo Fizz Buzz Bar
620851
Fractions
837
Happy Numbers
249
Happy Numbers (Long)
414
Leap Years
696
Look and Say
643
Medal Tally
394
Niven Numbers
539
Niven Numbers (Long)
817
Odious Numbers
781814
Odious Numbers (Long)
872799
Pangram Grep
543
Pernicious Numbers
711
Pernicious Numbers (Long)
739
Prime Numbers
570
Prime Numbers (Long)
758
Quine
593
Recamán
555
Time Distance
484
Tongue-twisters
267
United States
209
π
68