Abundant Numbers
17th46th32nd15th232nd24th12th217th23rd
Abundant Numbers (Long)
19th48th27th16th124th19th12th122nd16th
Collatz
21st46th32nd17th247th12th11th86th10th
Diamonds
29th19th
4th8th32nd11th
Divisors
19th62nd29th21st350th79th22nd816th47th
Evil Numbers
11th34th38th13th53rd6th6th1st10th
Evil Numbers (Long)
11th40th35th12th71st18th12th38th7th
Farey Sequence
15th
9th
Fibonacci
27th
75th25th303rd118th
895th34th
Fizz Buzz
30th61st64th14th1,071st86th10th1,159th41st
Gijswijt’s Sequence
8th25th5th6th36th5th8th35th6th
Happy Numbers
13th
29th18th146th26th
14th
Happy Numbers (Long)
11th35th31st12th84th21st9th72nd9th
Leap Years
13th37th27th10th205th19th4th174th8th
Niven Numbers
15th43rd38th18th198th29th1st242nd6th
Niven Numbers (Long)
19th46th32nd17th129th16th8th228th8th
Odious Numbers
13th32nd36th13th
6th6th1st11th
Odious Numbers (Long)
11th31st35th12th68th19th12th1st7th
Pascal’s Triangle
14th49th19th12th133rd13th8th290th14th
Pernicious Numbers
31st
25th1st75th18th
Pernicious Numbers (Long)
15th35th14th10th53rd11th3rd64th10th
Prime Numbers
17th52nd46th17th207th36th18th434th29th
Prime Numbers (Long)
22nd42nd29th15th109th22nd8th186th16th
Sierpiński Triangle
4th31st9th4th14th14th4th46th5th