Abundant Numbers
13th39th30th13th208th23rd12th726th22nd
Abundant Numbers (Long)
15th41st25th14th103rd18th12th358th15th
Collatz
16th40th30th16th208th30th10th342nd9th
Diamonds
22nd19th
4th7th46th9th
Divisors
15th56th26th19th331st76th18th1,163rd45th
Evil Numbers
10th29th34th12th51st6th1st1st9th
Evil Numbers (Long)
10th36th32nd11th61st14th10th32nd6th
Farey Sequence
13th
7th
Fibonacci
22nd
66th21st279th104th
820th31st
Fizz Buzz
26th53rd58th10th1,011th83rd9th1,430th40th
Gijswijt’s Sequence
7th22nd4th4th29th5th7th56th6th
Happy Numbers
10th
26th17th132nd27th
11th
Happy Numbers (Long)
8th32nd27th11th74th22nd9th191st9th
Leap Years
9th35th26th7th187th19th4th148th8th
Niven Numbers
14th37th33rd16th174th28th1st216th1st
Niven Numbers (Long)
16th41st30th15th108th17th7th322nd7th
Odious Numbers
11th28th33rd12th
6th1st1st9th
Odious Numbers (Long)
10th27th32nd11th58th15th10th1st6th
Pascal’s Triangle
11th43rd15th9th121st16th7th434th13th
Pernicious Numbers
27th
25th1st59th15th
Pernicious Numbers (Long)
10th28th13th8th45th12th3rd63rd9th
Prime Numbers
14th45th41st15th190th34th16th496th25th
Prime Numbers (Long)
17th37th26th12th95th22nd7th160th13th
Sierpiński Triangle
2nd22nd8th4th13th14th4th60th5th