12 Days of Christmas
396
Abundant Numbers
646
Abundant Numbers (Long)
856
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
764801
Evil Numbers (Long)
837793
Factorial Factorisation
145
Farey Sequence
443
Fibonacci
605
Fizz Buzz
707913501
Foo Fizz Buzz Bar
620851
Fractions
837
Happy Numbers
249
Happy Numbers (Long)
414
Leap Years
696
Look and Say
642
Medal Tally
394
Niven Numbers
539
Niven Numbers (Long)
817
Odious Numbers
781814
Odious Numbers (Long)
870798
Pangram Grep
543
Pernicious Numbers
711
Pernicious Numbers (Long)
737
Prime Numbers
569
Prime Numbers (Long)
757
Quine
592
Recamán
555
Time Distance
484
Tongue-twisters
267
United States
209
π
68