12 Days of Christmas
187
99 Bottles of Beer
709
Abundant Numbers
544
Abundant Numbers (Long)
598
Arabic to Roman
248
Arithmetic Numbers
643
Arrows
398
Ascending Primes
148
ASCII Table
416
Card Number Validation
640
Catalan Numbers
493
Christmas Trees
146
Collatz
656
CSS Colors
205
Day of Week
692
Divisors
694607
Emirp Numbers
464
Evil Numbers
562982
Evil Numbers (Long)
571952
Factorial Factorisation
520
Farey Sequence
545
Fibonacci
829872964935
Fizz Buzz
715967
Foo Fizz Buzz Bar
695
Forsyth–Edwards Notation
268
Fractions
577
Happy Numbers
635
Happy Numbers (Long)
598
ISBN
612
Leap Years
778
Leyland Numbers
791
ln 2
910
Look and Say
616
Niven Numbers
599
Niven Numbers (Long)
600
Odious Numbers
911980
Odious Numbers (Long)
575973
Ordinal Numbers
537
Pascal’s Triangle
359
Pernicious Numbers
335
Pernicious Numbers (Long)
396
Prime Numbers
480
Prime Numbers (Long)
473
Recamán
583
Set
467
Spelling Numbers
447
United States
72
π
348
τ
320