12 Days of Christmas
83rd
99 Bottles of Beer
63rd
Christmas Trees
66th
Cubes
34th
Diamonds
47th
Divisors
78th
Emirp Numbers
75th
Evil Numbers
93rd
Fibonacci
203rd
Fizz Buzz
334th142nd
Happy Numbers
67th
Leap Years
86th
Niven Numbers
71st
Odious Numbers
76th
Ordinal Numbers
51st
Pangram Grep
45th
Pascalβs Triangle
72nd
Pernicious Numbers
79th
Prime Numbers
54th
Quine
189th