Abundant Numbers
14th41st31st13th217th24th12th198th23rd
Abundant Numbers (Long)
16th43rd26th14th110th19th12th108th16th
Collatz
16th43rd30th16th224th31st11th79th10th
Diamonds
25th19th
4th7th31st9th
Divisors
17th58th27th20th341st79th21st772nd47th
Evil Numbers
10th31st35th12th52nd6th6th1st9th
Evil Numbers (Long)
10th38th33rd11th61st16th11th33rd6th
Farey Sequence
14th
8th
Fibonacci
22nd
68th22nd286th107th
840th31st
Fizz Buzz
28th54th61st12th1,036th85th9th1,112th41st
Gijswijt’s Sequence
7th23rd4th4th32nd5th7th29th6th
Happy Numbers
10th
28th17th140th27th
12th
Happy Numbers (Long)
8th33rd28th11th77th22nd9th63rd9th
Leap Years
11th34th26th8th192nd19th4th158th8th
Niven Numbers
14th40th35th17th184th31st1st224th6th
Niven Numbers (Long)
16th43rd31st16th118th18th7th205th8th
Odious Numbers
11th29th34th12th
6th6th1st9th
Odious Numbers (Long)
10th28th33rd11th58th17th11th1st6th
Pascal’s Triangle
11th45th15th10th123rd17th7th269th13th
Pernicious Numbers
28th
26th1st63rd15th
Pernicious Numbers (Long)
11th31st14th9th46th12th3rd51st9th
Prime Numbers
14th47th42nd16th197th35th16th401st26th
Prime Numbers (Long)
19th38th27th13th103rd23rd8th164th14th
Sierpiński Triangle
2nd27th9th4th13th14th4th42nd5th