Abundant Numbers
16th43rd31st14th224th24th12th788th23rd
Abundant Numbers (Long)
18th45th26th15th119th19th12th402nd16th
Collatz
20th44th30th17th235th31st11th389th10th
Diamonds
22nd19th
4th7th50th10th
Divisors
18th60th27th20th342nd79th21st1,211th46th
Evil Numbers
11th33rd36th13th53rd6th1st1st10th
Evil Numbers (Long)
11th39th34th12th68th17th12th35th7th
Farey Sequence
15th
9th
Fibonacci
26th
71st23rd291st108th
872nd33rd
Fizz Buzz
30th57th63rd13th1,054th85th10th1,486th41st
Gijswijt’s Sequence
8th23rd5th6th31st5th8th64th6th
Happy Numbers
11th
28th18th141st27th
13th
Happy Numbers (Long)
10th34th29th11th79th22nd9th211th9th
Leap Years
12th39th27th8th199th19th4th165th8th
Niven Numbers
15th43rd35th18th192nd32nd1st231st1st
Niven Numbers (Long)
18th43rd31st17th124th18th8th351st8th
Odious Numbers
12th31st35th13th
6th1st1st11th
Odious Numbers (Long)
11th30th34th12th64th18th12th1st7th
Pascal’s Triangle
13th45th17th12th131st17th7th463rd14th
Pernicious Numbers
29th
28th1st67th17th
Pernicious Numbers (Long)
14th32nd14th10th50th12th3rd75th10th
Prime Numbers
16th49th44th17th203rd35th18th531st28th
Prime Numbers (Long)
22nd39th28th14th107th23rd8th174th16th
Sierpiński Triangle
3rd22nd8th4th14th14th4th68th5th