12 Days of Christmas
8thAbundant Numbers
162ndAbundant Numbers (Long)
112thArithmetic Numbers
92ndAscending Primes
46thCatalan Numbers
90thChristmas Trees
196thCollatz
227thDay of Week
108thDivisors
351stEvil Numbers
1stEvil Numbers (Long)
29thFarey Sequence
88thFibonacci
50th
131stFizz Buzz
95thFoo Fizz Buzz Bar
64thFractions
20thHappy Numbers
176thHappy Numbers (Long)
98thISBN
72ndLeap Years
350thLook and Say
30thLucky Numbers
75thNiven Numbers
251stNiven Numbers (Long)
88thOdious Numbers
114thOdious Numbers (Long)
76thOrdinal Numbers
64thPangram Grep
157thPascalβs Triangle
27thPernicious Numbers
103rdPernicious Numbers (Long)
67thPrime Numbers
37thPrime Numbers (Long)
164thQuine
1st
52ndTongue-twisters
124thVampire Numbers
68th