Abundant Numbers
18th45th38th16th240th27th14th829th24th
Abundant Numbers (Long)
19th57th33rd17th131st22nd14th439th16th
Collatz
23rd45th39th17th258th19th12th432nd11th
Diamonds
24th22nd
4th8th68th11th
Divisors
19th64th33rd21st360th83rd22nd1,269th49th
Evil Numbers
11th36th43rd13th56th6th1st1st11th
Evil Numbers (Long)
11th40th38th12th77th20th12th44th7th
Farey Sequence
15th
9th
Fibonacci
30th
84th26th314th125th
933rd37th
Fizz Buzz
30th61st69th14th1,091st86th10th1,562nd41st
Gijswijt’s Sequence
9th26th8th7th37th6th8th77th6th
Happy Numbers
13th
31st19th149th27th
14th
Happy Numbers (Long)
12th35th33rd12th89th21st10th234th9th
Leap Years
13th41st32nd10th219th22nd5th186th9th
Niven Numbers
15th45th43rd19th203rd33rd1st258th1st
Niven Numbers (Long)
19th46th36th17th137th18th8th390th8th
Odious Numbers
13th34th41st13th
6th1st1st12th
Odious Numbers (Long)
11th33rd39th12th73rd21st12th1st7th
Pascal’s Triangle
14th50th22nd12th139th15th9th501st14th
Pernicious Numbers
38th
28th1st81st20th
Pernicious Numbers (Long)
15th33rd19th11th55th12th3rd99th11th
Prime Numbers
17th54th50th18th216th38th21st573rd30th
Prime Numbers (Long)
22nd43rd30th15th115th25th10th199th17th
Sierpiński Triangle
4th25th11th4th14th15th4th84th5th