Abundant Numbers
896th
Abundant Numbers (Long)
339th
Arithmetic Numbers
465th
Catalan Numbers
860th
Collatz
261st
Divisors
4,236th2,082nd
Evil Numbers
1,688th
238th
Evil Numbers (Long)
1,726th
Fibonacci
2,862nd
Fizz Buzz
2,227th3,427th
Foo Fizz Buzz Bar
1,391st
Happy Numbers
1,355th
Happy Numbers (Long)
963rd
Leap Years
1,761st
Leyland Numbers
979th
Niven Numbers
2,434th
Niven Numbers (Long)
1,185th
Odious Numbers
2,462nd1,197th1,777th
Odious Numbers (Long)
1,581st
Pascal’s Triangle
1,541st1,724th
Pernicious Numbers
1,974th
Prime Numbers
1,995th
Prime Numbers (Long)
1,459th
Recamán
709th
Smith Numbers
738th
Sudoku
349th
Van Eck Sequence
816th