Abundant Numbers
17th46th31st14th230th24th12th213th23rd
Abundant Numbers (Long)
19th48th26th15th122nd20th12th116th16th
Collatz
21st46th31st17th244th32nd11th85th10th
Diamonds
28th19th
4th8th31st11th
Divisors
18th62nd29th20th347th81st21st815th46th
Evil Numbers
11th34th38th13th53rd6th6th1st10th
Evil Numbers (Long)
11th40th35th12th70th18th12th38th7th
Farey Sequence
15th
9th
Fibonacci
27th
74th24th297th117th
892nd34th
Fizz Buzz
30th59th64th13th1,069th85th10th1,152nd41st
Gijswijt’s Sequence
8th25th5th6th36th5th8th34th6th
Happy Numbers
12th
29th18th146th28th
14th
Happy Numbers (Long)
10th35th30th12th84th22nd9th72nd9th
Leap Years
12th37th27th10th204th20th4th174th8th
Niven Numbers
15th43rd38th18th196th34th1st239th6th
Niven Numbers (Long)
18th46th32nd17th128th18th8th226th8th
Odious Numbers
13th32nd36th13th
6th6th1st11th
Odious Numbers (Long)
11th31st35th12th67th19th12th1st7th
Pascal’s Triangle
13th48th18th12th131st17th8th290th14th
Pernicious Numbers
31st
29th1st74th18th
Pernicious Numbers (Long)
14th35th14th10th52nd12th3rd62nd10th
Prime Numbers
16th52nd46th17th206th36th18th430th28th
Prime Numbers (Long)
22nd42nd28th14th109th23rd8th184th16th
Sierpiński Triangle
4th31st9th4th14th14th4th45th5th