Abundant Numbers
14th40th30th13th213th23rd12th742nd22nd
Abundant Numbers (Long)
16th42nd25th14th107th18th12th368th15th
Collatz
16th42nd30th16th217th30th10th352nd9th
Diamonds
22nd19th
4th7th47th9th
Divisors
17th58th26th20th337th77th19th1,173rd45th
Evil Numbers
10th30th34th12th51st6th1st1st9th
Evil Numbers (Long)
10th37th32nd11th61st14th10th32nd6th
Farey Sequence
14th
8th
Fibonacci
22nd
67th22nd282nd105th
828th31st
Fizz Buzz
28th54th58th12th1,024th83rd9th1,439th40th
Gijswijt’s Sequence
7th22nd4th4th29th5th7th56th6th
Happy Numbers
10th
26th17th135th27th
11th
Happy Numbers (Long)
8th32nd27th11th75th22nd9th195th9th
Leap Years
10th36th26th8th189th19th4th152nd8th
Niven Numbers
14th38th33rd17th179th28th1st219th1st
Niven Numbers (Long)
16th41st30th16th111th17th7th330th7th
Odious Numbers
11th29th33rd12th
6th1st1st9th
Odious Numbers (Long)
10th28th32nd11th58th15th10th1st6th
Pascal’s Triangle
11th44th15th10th121st17th7th440th13th
Pernicious Numbers
27th
25th1st62nd15th
Pernicious Numbers (Long)
11th28th13th9th45th12th3rd65th9th
Prime Numbers
14th46th41st16th191st34th16th503rd25th
Prime Numbers (Long)
18th38th26th13th96th22nd7th161st13th
Sierpiński Triangle
2nd22nd8th4th13th14th4th60th5th