Abundant Numbers
12th
37th
30th
11th
202nd
23rd
12th
691st
22nd
Abundant Numbers (Long)
13th
39th
25th
12th
100th
17th
12th
334th
15th
Collatz
14th
37th
29th
15th
201st
28th
10th
317th
9th
Diamonds
Divisors
14th
54th
25th
17th
324th
73rd
18th
1,130th
44th
Evil Numbers
7th
29th
33rd
10th
50th
5th
1st
1st
8th
Evil Numbers (Long)
7th
35th
32nd
9th
59th
14th
10th
32nd
6th
Farey Sequence
10th
Fibonacci
19th
Fizz Buzz
24th
51st
56th
10th
986th
83rd
9th
1,370th
40th
Gijswijt’s Sequence
5th
19th
4th
4th
26th
5th
7th
53rd
6th
Happy Numbers
8th
Happy Numbers (Long)
7th
29th
25th
10th
71st
19th
9th
179th
9th
Leap Years
9th
33rd
24th
7th
179th
17th
4th
139th
8th
Niven Numbers
10th
35th
31st
12th
171st
28th
1st
203rd
1st
Niven Numbers (Long)
13th
39th
29th
14th
105th
15th
6th
302nd
6th
Odious Numbers
6th
28th
33rd
10th
Odious Numbers (Long)
6th
27th
32nd
8th
55th
15th
10th
1st
6th
Pascal’s Triangle
9th
41st
14th
8th
117th
16th
7th
419th
12th
Pernicious Numbers
Pernicious Numbers (Long)
8th
26th
13th
7th
42nd
11th
2nd
58th
9th
Prime Numbers
11th
42nd
39th
14th
186th
33rd
16th
475th
25th
Prime Numbers (Long)
14th
34th
25th
11th
91st
22nd
7th
146th
11th
Sierpiński Triangle
2nd
20th
8th
4th
13th
13th
4th
57th
5th