12 Days of Christmas
882
99 Bottles of Beer
775
Abundant Numbers
842
Arrows
388
Christmas Trees
761
Divisors
755860
Emirp Numbers
673
Evil Numbers
785964949
800
Fibonacci
786
Fizz Buzz
1,000
Foo Fizz Buzz Bar
888
Happy Numbers
646
Kolakoski Sequence
583
Leap Years
837
Leyland Numbers
700
Look and Say
625
Niven Numbers
808
Odious Numbers
769982949
784
Pangram Grep
983
Pascal’s Triangle
712
Pernicious Numbers
453
Prime Numbers
800
Prime Numbers (Long)
826
Quine
615
893
Recamán
718
Sierpiński Triangle
257
Tongue-twisters
860
λ
206
𝑒
468
5089