Abundant Numbers
13th40th30th12th206th23rd12th184th22nd
Abundant Numbers (Long)
15th42nd25th13th103rd17th12th98th15th
Collatz
16th41st29th16th207th28th10th69th9th
Diamonds
24th18th
4th7th30th9th
Divisors
15th56th26th18th328th75th18th744th45th
Evil Numbers
9th29th34th11th51st6th6th1st9th
Evil Numbers (Long)
9th37th32nd10th60th14th10th32nd6th
Farey Sequence
13th
7th
Fibonacci
22nd
64th21st276th99th
812th30th
Fizz Buzz
26th53rd58th10th1,007th83rd9th1,080th40th
Gijswijt’s Sequence
7th23rd4th4th31st5th7th26th6th
Happy Numbers
9th
26th16th134th26th
12th
Happy Numbers (Long)
8th33rd26th11th75th20th9th57th9th
Leap Years
9th32nd26th7th187th18th4th146th8th
Niven Numbers
13th37th31st14th174th28th1st210th6th
Niven Numbers (Long)
16th42nd29th15th107th16th6th188th6th
Odious Numbers
10th28th33rd11th
6th6th1st9th
Odious Numbers (Long)
9th27th32nd10th57th15th10th1st6th
Pascal’s Triangle
11th44th14th9th120th16th7th251st13th
Pernicious Numbers
26th
25th1st57th14th
Pernicious Numbers (Long)
10th30th13th8th44th11th2nd44th9th
Prime Numbers
13th45th39th15th189th34th16th385th25th
Prime Numbers (Long)
17th36th26th12th94th22nd7th153rd12th
Sierpiński Triangle
2nd27th9th4th13th13th4th37th5th