Abundant Numbers
16th45th31st14th230th24th12th796th23rd
Abundant Numbers (Long)
18th47th26th15th122nd20th12th411th16th
Collatz
21st45th31st17th243rd31st11th398th10th
Diamonds
22nd19th
4th8th53rd11th
Divisors
18th62nd29th20th347th81st21st1,235th46th
Evil Numbers
11th34th38th13th53rd6th1st1st10th
Evil Numbers (Long)
11th39th35th12th70th18th12th38th7th
Farey Sequence
15th
9th
Fibonacci
27th
74th24th297th116th
890th34th
Fizz Buzz
30th59th64th13th1,067th85th10th1,506th41st
Gijswijt’s Sequence
8th24th5th6th32nd5th8th68th6th
Happy Numbers
12th
28th18th144th28th
13th
Happy Numbers (Long)
10th34th30th12th83rd22nd9th220th9th
Leap Years
12th40th27th10th204th20th4th173rd8th
Niven Numbers
15th43rd38th18th196th34th1st238th1st
Niven Numbers (Long)
18th45th32nd17th128th18th8th363rd8th
Odious Numbers
13th32nd36th13th
6th1st1st11th
Odious Numbers (Long)
11th31st35th12th67th19th12th1st7th
Pascal’s Triangle
13th47th18th12th131st17th8th481st14th
Pernicious Numbers
31st
29th1st73rd18th
Pernicious Numbers (Long)
14th33rd14th10th52nd12th3rd84th10th
Prime Numbers
16th52nd45th17th205th36th18th540th28th
Prime Numbers (Long)
22nd42nd28th14th108th23rd8th184th16th
Sierpiński Triangle
3rd24th8th4th14th14th4th72nd5th