Abundant Numbers
18th46th38th16th242nd29th14th833rd25th
Abundant Numbers (Long)
19th57th33rd17th132nd23rd14th443rd18th
Collatz
23rd46th41st17th262nd19th12th433rd11th
Diamonds
25th22nd
4th8th69th11th
Divisors
19th64th33rd21st362nd85th22nd1,272nd49th
Evil Numbers
12th37th43rd13th58th6th1st1st11th
Evil Numbers (Long)
12th41st39th12th78th22nd12th44th7th
Farey Sequence
15th
9th
Fibonacci
30th
85th26th319th127th
946th37th
Fizz Buzz
30th62nd70th14th1,101st86th11th1,567th41st
Gijswijt’s Sequence
9th26th8th7th38th7th8th80th6th
Happy Numbers
13th
32nd19th150th28th
14th
Happy Numbers (Long)
12th35th34th12th89th22nd10th238th10th
Leap Years
13th42nd34th10th227th23rd5th187th9th
Niven Numbers
15th46th44th19th205th34th1st258th1st
Niven Numbers (Long)
19th46th36th17th139th18th8th392nd8th
Odious Numbers
14th34th41st13th
6th1st1st12th
Odious Numbers (Long)
12th33rd39th12th74th23rd12th1st7th
Pascal’s Triangle
14th50th23rd12th139th15th9th503rd15th
Pernicious Numbers
38th
29th1st81st22nd
Pernicious Numbers (Long)
15th33rd19th11th56th14th3rd100th11th
Prime Numbers
17th55th51st18th218th39th21st575th31st
Prime Numbers (Long)
22nd44th31st15th117th27th10th201st17th
Sierpiński Triangle
4th25th11th4th15th15th4th86th5th