12 Days of Christmas
502451
99 Bottles of Beer
283
Abundant Numbers
335
Abundant Numbers (Long)
323573
Arithmetic Numbers
255480
Christmas Trees
121
Collatz
496445
Divisors
486
Emirp Numbers
338279
Emirp Numbers (Long)
376312
Evil Numbers
348
Evil Numbers (Long)
433
Factorial Factorisation
329
Fibonacci
312234
Fizz Buzz
275354
Foo Fizz Buzz Bar
277306
Happy Numbers
155
Happy Numbers (Long)
169
Leap Years
468
Niven Numbers
251
Odious Numbers
208
Pernicious Numbers
146
Prime Numbers
270370
Smith Numbers
136
Vampire Numbers
108