12 Days of Christmas
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arithmetic Numbers
Christmas Trees
Collatz
Diamonds
Divisors
2,924th
359th
1,758th
693rd
Emirp Numbers
Emirp Numbers (Long)
Evil Numbers
Evil Numbers (Long)
Fibonacci
1,738th
623rd
Fizz Buzz
9,377th
608th
Foo Fizz Buzz Bar
Gijswijt’s Sequence
Inventory Sequence
479th
109th
Kolakoski Sequence
Leap Years
Look and Say
Lucky Numbers
Niven Numbers
1,680th
426th
Odious Numbers
Odious Numbers (Long)
Ordinal Numbers
Prime Numbers
2,901st
654th
Prime Numbers (Long)
Recamán
Van Eck Sequence