12 Days of Christmas
870
99 Bottles of Beer
703
Abundant Numbers
513
Christmas Trees
644
Collatz
572
Divisors
520
Emirp Numbers
398
Emojify
222
Evil Numbers
366
Evil Numbers (Long)
42
Fibonacci
488
Fizz Buzz
534
Foo Fizz Buzz Bar
692
Happy Numbers
458
Leap Years
507
Look and Say
126
Niven Numbers
498
Niven Numbers (Long)
636
Odious Numbers
367
Ordinal Numbers
550
Pangram Grep
377
Pernicious Numbers
337
Prime Numbers
468
Recamán
359
Seven Segment
392
Spelling Numbers
375
Time Distance
321
Tongue-twisters
493
United States
159