12 Days of Christmas
127
99 Bottles of Beer
695
Abundant Numbers
536
Abundant Numbers (Long)
587
Arabic to Roman
249
Arithmetic Numbers
639
Arrows
517
Ascending Primes
149
ASCII Table
410
Card Number Validation
645
Catalan Numbers
494
Christmas Trees
146
Collatz
655
CSS Colors
108
Day of Week
694
Divisors
713608
Emirp Numbers
335
Evil Numbers
554982
Evil Numbers (Long)
569953
Factorial Factorisation
523
Farey Sequence
546
Fibonacci
812873964935
Fizz Buzz
713965
Foo Fizz Buzz Bar
692
Forsyth–Edwards Notation
269
Fractions
574
Happy Numbers
544
Happy Numbers (Long)
593
ISBN
610
Leap Years
752
Leyland Numbers
786
ln 2
912
Look and Say
617
Niven Numbers
588
Niven Numbers (Long)
570
Odious Numbers
912980
Odious Numbers (Long)
577974
Ordinal Numbers
534
Pascal’s Triangle
359
Pernicious Numbers
336
Pernicious Numbers (Long)
392
Prime Numbers
454
Prime Numbers (Long)
474
Recamán
582
Set
469
Spelling Numbers
404
United States
68
π
325
τ
311