Abundant Numbers
729
Abundant Numbers (Long)
811
Arithmetic Numbers
784
Ascending Primes
402
Catalan Numbers
930
Collatz
796
Divisors
916
Fibonacci
986
Fizz Buzz
862
Foo Fizz Buzz Bar
756
Happy Numbers
560
Happy Numbers (Long)
696
Leap Years
882
Leyland Numbers
604
Niven Numbers
918
Niven Numbers (Long)
885
Ordinal Numbers
698
Pascal’s Triangle
677
Prime Numbers
980
Prime Numbers (Long)
972
Recamán
768
United States
370
Vampire Numbers
638
π
692
τ
687
√2
870
𝑒
851