Abundant Numbers
784th
Abundant Numbers (Long)
376th
Arithmetic Numbers
427th
Catalan Numbers
736th
Collatz
333rd
Divisors
3,981st1,889th
Evil Numbers
1,497th
205th
Evil Numbers (Long)
1,550th
Fibonacci
2,571st
Fizz Buzz
2,127th3,259th
Foo Fizz Buzz Bar
1,261st
Happy Numbers
1,198th
Happy Numbers (Long)
854th
Leap Years
1,211th
Leyland Numbers
874th
Niven Numbers
2,196th
Niven Numbers (Long)
1,046th
Odious Numbers
2,234th1,096th1,583rd
Odious Numbers (Long)
1,408th
Pascal’s Triangle
1,397th1,569th
Pernicious Numbers
1,709th
Prime Numbers
1,778th
Prime Numbers (Long)
1,254th
Recamán
650th
Smith Numbers
642nd
Sudoku
312th
Van Eck Sequence
711th