Abundant Numbers
13th39th30th12th206th23rd12th718th22nd
Abundant Numbers (Long)
15th41st25th13th103rd17th12th352nd15th
Collatz
16th40th29th16th207th28th10th333rd9th
Diamonds
22nd18th
4th7th46th9th
Divisors
15th56th26th18th328th75th18th1,153rd45th
Evil Numbers
9th29th34th11th51st6th1st1st8th
Evil Numbers (Long)
9th36th32nd10th60th14th10th32nd6th
Farey Sequence
13th
7th
Fibonacci
22nd
64th21st276th99th
812th30th
Fizz Buzz
26th53rd58th10th1,006th83rd9th1,416th40th
Gijswijt’s Sequence
7th21st4th4th29th5th7th54th6th
Happy Numbers
9th
25th16th132nd26th
11th
Happy Numbers (Long)
8th32nd26th11th74th20th9th190th9th
Leap Years
9th34th26th7th187th18th4th144th8th
Niven Numbers
13th37th31st14th174th28th1st210th1st
Niven Numbers (Long)
16th41st29th15th107th16th6th315th6th
Odious Numbers
10th28th33rd11th
6th1st1st8th
Odious Numbers (Long)
9th27th32nd10th57th15th10th1st6th
Pascal’s Triangle
11th43rd14th9th120th16th7th428th13th
Pernicious Numbers
26th
25th1st57th14th
Pernicious Numbers (Long)
10th27th13th8th44th11th2nd60th9th
Prime Numbers
13th45th39th15th189th34th16th488th25th
Prime Numbers (Long)
17th36th26th12th94th22nd7th154th12th
Sierpiński Triangle
2nd22nd8th4th13th13th4th59th5th