12 Days of Christmas
335th
Christmas Trees
281st
Divisors
81st
Emirp Numbers
61st
Evil Numbers
140th
116th
Fibonacci
262nd1,654th
Fizz Buzz
1st
Happy Numbers
58th
Leap Years
232nd
Niven Numbers
1st
Odious Numbers
113th
Pangram Grep
91st
Pascalβs Triangle
94th
Pernicious Numbers
66th
Prime Numbers
114th
Seven Segment
66th