12 Days of Christmas
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arithmetic Numbers
Christmas Trees
Collatz
Diamonds
Divisors
2,780th
133rd
1,503rd
619th
Emirp Numbers
Emirp Numbers (Long)
Evil Numbers
Evil Numbers (Long)
Fibonacci
1,714th
616th
Fizz Buzz
9,220th
498th
Foo Fizz Buzz Bar
Gijswijt’s Sequence
Inventory Sequence
459th
103rd
Kolakoski Sequence
Leap Years
Look and Say
Lucky Numbers
Niven Numbers
1,681st
319th
Odious Numbers
Odious Numbers (Long)
Ordinal Numbers
Prime Numbers
2,789th
552nd
Prime Numbers (Long)
Recamán
Van Eck Sequence