Abundant Numbers
14th39th30th13th212th23rd12th732nd22nd
Abundant Numbers (Long)
16th41st25th14th104th18th12th360th15th
Collatz
16th40th30th16th211th30th10th346th9th
Diamonds
22nd19th
4th7th46th9th
Divisors
17th56th26th20th334th76th19th1,166th45th
Evil Numbers
10th29th34th12th51st6th1st1st9th
Evil Numbers (Long)
10th36th32nd11th61st14th10th32nd6th
Farey Sequence
14th
8th
Fibonacci
22nd
66th22nd279th104th
823rd31st
Fizz Buzz
28th53rd58th12th1,013th83rd9th1,434th40th
Gijswijt’s Sequence
7th22nd4th4th29th5th7th57th6th
Happy Numbers
10th
26th17th133rd27th
11th
Happy Numbers (Long)
8th32nd27th11th74th22nd9th194th9th
Leap Years
10th35th26th8th187th19th4th149th8th
Niven Numbers
14th37th33rd17th175th28th1st216th1st
Niven Numbers (Long)
16th41st30th16th109th17th7th322nd7th
Odious Numbers
11th28th33rd12th
6th1st1st9th
Odious Numbers (Long)
10th27th32nd11th58th15th10th1st6th
Pascal’s Triangle
11th43rd15th10th121st16th7th436th13th
Pernicious Numbers
27th
25th1st60th15th
Pernicious Numbers (Long)
11th28th13th9th45th12th3rd64th9th
Prime Numbers
14th45th41st16th190th34th16th497th25th
Prime Numbers (Long)
18th37th26th13th95th22nd7th160th13th
Sierpiński Triangle
2nd22nd8th4th13th14th4th60th5th