Abundant Numbers
18th46th36th16th237th27th14th228th24th
Abundant Numbers (Long)
19th59th32nd17th128th21st14th131st16th
Collatz
22nd46th37th17th252nd18th11th90th11th
Diamonds
30th21st
4th8th36th11th
Divisors
19th63rd32nd21st355th82nd22nd834th49th
Evil Numbers
11th35th41st13th54th6th6th1st11th
Evil Numbers (Long)
11th40th36th12th73rd20th12th43rd7th
Farey Sequence
15th
10th
Fibonacci
30th
82nd26th310th122nd
925th36th
Fizz Buzz
30th61st68th14th1,080th86th10th1,189th41st
Gijswijt’s Sequence
9th27th6th6th40th6th8th39th6th
Happy Numbers
13th
31st19th148th27th
15th
Happy Numbers (Long)
12th36th32nd12th87th21st9th74th9th
Leap Years
13th37th29th10th213th22nd5th183rd9th
Niven Numbers
15th44th42nd19th201st32nd1st255th6th
Niven Numbers (Long)
19th47th35th17th134th18th8th243rd8th
Odious Numbers
13th33rd38th13th
6th6th1st13th
Odious Numbers (Long)
11th32nd36th12th69th21st12th1st7th
Pascal’s Triangle
14th51st20th12th137th15th9th299th14th
Pernicious Numbers
34th
28th1st78th20th
Pernicious Numbers (Long)
15th35th18th11th54th12th3rd71st11th
Prime Numbers
17th54th48th18th212th38th20th449th29th
Prime Numbers (Long)
22nd43rd30th15th113th25th10th195th17th
Sierpiński Triangle
5th31st10th4th14th15th4th52nd5th