Abundant Numbers
16th44th31st14th228th24th12th794th23rd
Abundant Numbers (Long)
18th46th26th15th120th20th12th409th16th
Collatz
21st45th31st17th242nd31st11th397th10th
Diamonds
22nd19th
4th8th51st11th
Divisors
18th61st29th20th346th81st21st1,227th46th
Evil Numbers
11th34th36th13th53rd6th1st1st10th
Evil Numbers (Long)
11th39th34th12th70th18th12th35th7th
Farey Sequence
15th
9th
Fibonacci
26th
73rd24th296th112th
886th34th
Fizz Buzz
30th58th64th13th1,062nd85th10th1,499th41st
Gijswijt’s Sequence
8th23rd5th6th31st5th8th66th6th
Happy Numbers
11th
28th18th143rd27th
13th
Happy Numbers (Long)
10th34th30th12th81st22nd9th213th9th
Leap Years
12th39th27th8th202nd19th4th168th8th
Niven Numbers
15th43rd37th18th195th33rd1st236th1st
Niven Numbers (Long)
18th45th32nd17th126th18th8th360th8th
Odious Numbers
12th32nd35th13th
6th1st1st11th
Odious Numbers (Long)
11th31st34th12th66th19th12th1st7th
Pascal’s Triangle
13th47th18th12th131st17th7th472nd14th
Pernicious Numbers
30th
29th1st70th18th
Pernicious Numbers (Long)
14th33rd14th10th51st12th3rd78th10th
Prime Numbers
16th51st45th17th204th35th18th538th28th
Prime Numbers (Long)
22nd41st28th14th107th23rd8th182nd16th
Sierpiński Triangle
3rd24th8th4th14th14th4th72nd5th