Abundant Numbers
708
ASCII Table
573
Catalan Numbers
874
Catalan’s Constant
449
Christmas Trees
617
Collatz
755
Diamonds
509610
Divisors
607933
Emirp Numbers
377563
Evil Numbers
755
Fibonacci
566935
Fizz Buzz
673848
Foo Fizz Buzz Bar
731723
Happy Numbers
548
Happy Numbers (Long)
681
Leap Years
831
Prime Numbers
892
Prime Numbers (Long)
639