Abundant Numbers
17th46th32nd14th232nd24th12th216th23rd
Abundant Numbers (Long)
19th48th27th15th124th19th12th119th16th
Collatz
21st46th31st17th245th12th11th86th10th
Diamonds
28th19th
4th8th32nd11th
Divisors
18th62nd29th20th348th79th21st815th47th
Evil Numbers
11th34th38th13th53rd6th6th1st10th
Evil Numbers (Long)
11th40th35th12th71st18th12th38th7th
Farey Sequence
15th
9th
Fibonacci
27th
74th24th299th117th
893rd34th
Fizz Buzz
30th59th64th13th1,070th85th10th1,153rd41st
Gijswijt’s Sequence
8th25th5th6th36th5th8th35th6th
Happy Numbers
12th
29th18th146th26th
14th
Happy Numbers (Long)
10th35th31st12th84th21st9th72nd9th
Leap Years
12th37th27th10th204th19th4th174th8th
Niven Numbers
15th43rd38th18th196th29th1st241st6th
Niven Numbers (Long)
18th46th32nd17th128th16th8th227th8th
Odious Numbers
13th32nd36th13th
6th6th1st11th
Odious Numbers (Long)
11th31st35th12th68th19th12th1st7th
Pascal’s Triangle
13th48th18th12th132nd12th8th290th14th
Pernicious Numbers
31st
25th1st75th18th
Pernicious Numbers (Long)
15th35th14th10th53rd11th3rd63rd10th
Prime Numbers
16th52nd46th17th207th35th18th432nd28th
Prime Numbers (Long)
22nd42nd28th14th109th22nd8th185th16th
Sierpiński Triangle
4th31st9th4th14th14th4th46th5th