12 Days of Christmas
462
99 Bottles of Beer
545
Abundant Numbers
813
Arrows
526
Christmas Trees
733
Divisors
713833
Emirp Numbers
571
Evil Numbers
722895919
784
Fibonacci
768
Fizz Buzz
987
Foo Fizz Buzz Bar
863
Happy Numbers
510
Kolakoski Sequence
555
Leap Years
796
Leyland Numbers
661
Look and Say
595
Niven Numbers
778
Odious Numbers
717887914
766
Pangram Grep
937
Pascal’s Triangle
680
Pernicious Numbers
434
Prime Numbers
776
Prime Numbers (Long)
789
Quine
606
864
Recamán
685
Sierpiński Triangle
241
Tongue-twisters
563
λ
141
𝑒
431
47