12 Days of Christmas
404
99 Bottles of Beer
425
Abundant Numbers
513
Christmas Trees
644
Collatz
572
Divisors
520
Emirp Numbers
248
Emojify
213
Evil Numbers
366
Evil Numbers (Long)
42
Fibonacci
488
Fizz Buzz
534
Foo Fizz Buzz Bar
688
Happy Numbers
304
Leap Years
505
Look and Say
126
Niven Numbers
498
Niven Numbers (Long)
636
Odious Numbers
367
Ordinal Numbers
549
Pangram Grep
377
Pernicious Numbers
337
Prime Numbers
468
Recamán
359
Seven Segment
365
Spelling Numbers
217
Time Distance
206
Tongue-twisters
286
United States
152