Abundant Numbers
13th39th30th12th203rd23rd12th712th22nd
Abundant Numbers (Long)
14th41st25th13th101st17th12th349th15th
Collatz
16th39th29th16th205th28th10th324th9th
Diamonds
22nd16th
4th7th45th9th
Divisors
15th56th25th18th326th73rd18th1,146th45th
Evil Numbers
8th29th33rd11th50th6th1st1st8th
Evil Numbers (Long)
8th36th32nd10th59th14th10th32nd6th
Farey Sequence
13th
6th
Fibonacci
22nd
63rd20th272nd97th
802nd30th
Fizz Buzz
25th53rd57th10th996th83rd9th1,401st40th
Gijswijt’s Sequence
7th21st4th4th28th5th7th54th6th
Happy Numbers
9th
25th16th131st26th
11th
Happy Numbers (Long)
8th32nd26th11th73rd20th9th188th9th
Leap Years
9th34th25th7th183rd18th4th143rd8th
Niven Numbers
12th36th31st14th172nd28th1st208th1st
Niven Numbers (Long)
16th41st29th15th105th16th6th313th6th
Odious Numbers
10th28th33rd11th
6th1st1st8th
Odious Numbers (Long)
8th27th32nd10th56th15th10th1st6th
Pascal’s Triangle
11th43rd14th9th118th16th7th427th13th
Pernicious Numbers
26th
25th1st57th14th
Pernicious Numbers (Long)
10th27th13th8th42nd11th2nd60th9th
Prime Numbers
13th44th39th15th188th34th16th485th25th
Prime Numbers (Long)
16th36th26th12th92nd22nd7th154th12th
Sierpiński Triangle
2nd22nd8th4th13th13th4th58th5th