Abundant Numbers
757
Abundant Numbers (Long)
910
Arithmetic Numbers
905
Ascending Primes
456
Catalan Numbers
927
Collatz
879
Divisors
962
Fibonacci
984
Fizz Buzz
941
Foo Fizz Buzz Bar
947
Happy Numbers
719
Happy Numbers (Long)
817
Leap Years
881
Leyland Numbers
704
Niven Numbers
913
Niven Numbers (Long)
895
Ordinal Numbers
844
Pascal’s Triangle
729
Prime Numbers
980
Prime Numbers (Long)
971
Recamán
845
United States
470
Vampire Numbers
854
π
774
τ
767
√2
866
𝑒
847