Abundant Numbers
15th40th31st13th218th24th12th775th23rd
Abundant Numbers (Long)
17th42nd26th14th111th19th12th392nd16th
Collatz
18th42nd30th16th229th31st11th378th10th
Diamonds
22nd19th
4th7th49th10th
Divisors
18th58th27th20th342nd79th21st1,202nd47th
Evil Numbers
11th31st35th12th53rd6th1st1st9th
Evil Numbers (Long)
11th37th33rd11th67th16th11th33rd6th
Farey Sequence
15th
8th
Fibonacci
23rd
70th22nd287th107th
858th31st
Fizz Buzz
29th56th62nd12th1,049th85th10th1,470th41st
Gijswijt’s Sequence
8th23rd5th4th29th5th7th62nd6th
Happy Numbers
11th
27th17th139th27th
13th
Happy Numbers (Long)
9th32nd28th11th77th22nd9th205th9th
Leap Years
12th36th26th8th193rd19th4th161st8th
Niven Numbers
15th41st35th17th186th32nd1st228th1st
Niven Numbers (Long)
17th43rd31st16th120th18th8th345th8th
Odious Numbers
12th29th34th12th
6th1st1st9th
Odious Numbers (Long)
11th28th33rd11th63rd17th11th1st6th
Pascal’s Triangle
12th45th15th11th124th17th7th455th13th
Pernicious Numbers
28th
27th1st65th17th
Pernicious Numbers (Long)
13th29th14th9th48th12th3rd73rd9th
Prime Numbers
15th48th43rd16th199th35th17th517th27th
Prime Numbers (Long)
20th38th27th13th104th23rd8th170th15th
Sierpiński Triangle
3rd22nd8th4th14th14th4th66th5th