Abundant Numbers
18th46th33rd15th235th26th14th220th24th
Abundant Numbers (Long)
19th59th28th16th128th21st14th125th16th
Collatz
22nd46th34th17th249th16th11th87th11th
Diamonds
30th19th
4th8th34th11th
Divisors
19th63rd29th21st351st80th22nd823rd47th
Evil Numbers
11th35th39th13th54th6th6th1st10th
Evil Numbers (Long)
11th40th35th12th72nd20th12th41st7th
Farey Sequence
15th
10th
Fibonacci
29th
76th26th304th119th
913th34th
Fizz Buzz
30th61st65th14th1,075th86th10th1,176th41st
Gijswijt’s Sequence
9th27th5th6th37th5th8th36th6th
Happy Numbers
13th
29th18th147th27th
14th
Happy Numbers (Long)
12th36th31st12th86th21st9th72nd9th
Leap Years
13th37th27th10th208th21st5th177th8th
Niven Numbers
15th43rd39th19th198th30th1st248th6th
Niven Numbers (Long)
19th47th33rd17th129th17th8th233rd8th
Odious Numbers
13th33rd37th13th
6th6th1st11th
Odious Numbers (Long)
11th32nd35th12th68th21st12th1st7th
Pascal’s Triangle
14th51st19th12th134th14th8th292nd14th
Pernicious Numbers
33rd
27th1st75th19th
Pernicious Numbers (Long)
15th35th16th11th53rd12th3rd67th10th
Prime Numbers
17th54th47th18th209th37th20th442nd29th
Prime Numbers (Long)
22nd43rd29th15th111th23rd9th191st16th
Sierpiński Triangle
5th31st9th4th14th14th4th48th5th