12 Days of Christmas
187
99 Bottles of Beer
709
Abundant Numbers
544
Abundant Numbers (Long)
591
Arabic to Roman
248
Arithmetic Numbers
638
Arrows
399
Ascending Primes
149
ASCII Table
416
Card Number Validation
643
Catalan Numbers
493
Christmas Trees
146
Collatz
657
CSS Colors
205
Day of Week
693
Divisors
712607
Emirp Numbers
464
Evil Numbers
563982
Evil Numbers (Long)
571952
Factorial Factorisation
521
Farey Sequence
545
Fibonacci
829872964935
Fizz Buzz
715968
Foo Fizz Buzz Bar
696
Forsyth–Edwards Notation
268
Fractions
577
Happy Numbers
636
Happy Numbers (Long)
599
ISBN
612
Leap Years
778
Leyland Numbers
785
ln 2
910
Look and Say
616
Niven Numbers
591
Niven Numbers (Long)
600
Odious Numbers
911980
Odious Numbers (Long)
576973
Ordinal Numbers
537
Pascal’s Triangle
359
Pernicious Numbers
335
Pernicious Numbers (Long)
396
Prime Numbers
481
Prime Numbers (Long)
473
Recamán
583
Set
466
Spelling Numbers
406
United States
72
π
348
τ
320