Abundant Numbers
Arabic to Roman
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Diamonds
Divisors
Emirp Numbers
Evil Numbers
633
816
Fibonacci
Fizz Buzz
673
898
Happy Numbers
Intersection
Kolakoski Sequence
Leap Years
818
843
Niven Numbers
671
772
Odious Numbers
641
800
Ordinal Numbers
527
710
Pangram Grep
Pascal’s Triangle
Pernicious Numbers
Pernicious Numbers (Long)
Prime Numbers
646
656
Quine
Rule 110
Sierpiński Triangle
φ
√2
𝑒