Abundant Numbers
873rd
Abundant Numbers (Long)
380th
Arithmetic Numbers
453rd
Catalan Numbers
830th
Collatz
253rd
Divisors
4,182nd2,048th
Evil Numbers
1,639th
228th
Evil Numbers (Long)
1,701st
Fibonacci
2,796th
Fizz Buzz
2,225th3,413th
Foo Fizz Buzz Bar
1,361st
Happy Numbers
1,330th
Happy Numbers (Long)
945th
Leap Years
1,301st
Leyland Numbers
963rd
Niven Numbers
2,369th
Niven Numbers (Long)
1,128th
Odious Numbers
2,428th1,176th1,740th
Odious Numbers (Long)
1,556th
Pascal’s Triangle
1,511th1,692nd
Pernicious Numbers
1,959th
Prime Numbers
1,945th
Prime Numbers (Long)
1,422nd
Recamán
691st
Smith Numbers
725th
Sudoku
335th
Van Eck Sequence
781st