99 Bottles of Beer
634
Abundant Numbers
717
Divisors
876
Emirp Numbers
569
Emojify
416
Evil Numbers
784
Fibonacci
934
Fizz Buzz
960
Happy Numbers
606
Leap Years
672
Niven Numbers
627
Odious Numbers
782
Pernicious Numbers
426
685
Prime Numbers
643
Rule 110
4
Tongue-twisters
552
Vampire Numbers
85
545
λ
159
π
153
57
25
97
63
45τ
62
φ
51
√2
47
𝑒
46