Abundant Numbers
13th40th30th11th202nd23rd12th181st22nd
Abundant Numbers (Long)
14th42nd25th12th101st17th12th95th15th
Collatz
17th40th29th15th205th28th10th67th9th
Diamonds
Divisors
15th56th25th17th326th73rd18th732nd45th
Evil Numbers
8th29th33rd10th50th5th5th1st9th
Evil Numbers (Long)
8th37th32nd9th59th14th10th33rd6th
Farey Sequence
12th
Fibonacci
23rd
Fizz Buzz
25th53rd57th10th994th83rd9th1,057th40th
Gijswijt’s Sequence
6th22nd4th4th28th5th7th26th6th
Happy Numbers
9th
Happy Numbers (Long)
8th33rd25th10th73rd19th9th55th9th
Leap Years
9th32nd25th7th180th18th4th141st8th
Niven Numbers
11th36th31st13th171st28th1st202nd6th
Niven Numbers (Long)
14th42nd29th14th105th16th6th182nd6th
Odious Numbers
9th28th33rd10th
Odious Numbers (Long)
7th27th32nd8th56th15th10th1st6th
Pascal’s Triangle
10th44th14th8th117th16th7th249th12th
Pernicious Numbers
Pernicious Numbers (Long)
10th30th13th7th42nd11th2nd43rd9th
Prime Numbers
12th45th39th14th186th33rd16th378th25th
Prime Numbers (Long)
15th36th25th11th92nd22nd7th148th11th
Sierpiński Triangle
2nd26th9th4th13th13th4th36th5th