12 Days of Christmas
330
Abundant Numbers
641
Abundant Numbers (Long)
851
Arithmetic Numbers
662
Ascending Primes
517
Catalan Numbers
508
Catalan’s Constant
75
Collatz
694
Divisors
727
Emirp Numbers
308
Emirp Numbers (Long)
568
Evil Numbers
767488
Evil Numbers (Long)
836495
Factorial Factorisation
111
Farey Sequence
445
Fibonacci
601
Fizz Buzz
704641500
Foo Fizz Buzz Bar
616674
Fractions
844
Happy Numbers
244
Happy Numbers (Long)
392
Leap Years
644
Look and Say
596
Medal Tally
365
Niven Numbers
529
Niven Numbers (Long)
751
Odious Numbers
777502
Odious Numbers (Long)
866506
Pangram Grep
512
Pernicious Numbers
707
Pernicious Numbers (Long)
721
Prime Numbers
572
Prime Numbers (Long)
758
Quine
594
Recamán
524
Time Distance
393
Tongue-twisters
257
United States
187
π