Abundant Numbers
727
Abundant Numbers (Long)
808
Arithmetic Numbers
780
Ascending Primes
402
Catalan Numbers
927
Collatz
796
Divisors
895
Fibonacci
984
Fizz Buzz
861
Foo Fizz Buzz Bar
755
Happy Numbers
558
Happy Numbers (Long)
693
Leap Years
880
Leyland Numbers
599
Niven Numbers
913
Niven Numbers (Long)
895
Ordinal Numbers
689
Pascal’s Triangle
675
Prime Numbers
980
Prime Numbers (Long)
971
Recamán
763
United States
349
Vampire Numbers
631
π
691
τ
686
√2
866
𝑒
847