Abundant Numbers
19th46th33rd15th238th26th14th816th24th
Abundant Numbers (Long)
20th59th28th16th129th21st14th430th17th
Collatz
22nd46th34th17th251st16th11th420th11th
Diamonds
25th21st
4th8th63rd11th
Divisors
19th64th31st21st352nd80th22nd1,257th49th
Evil Numbers
11th35th39th13th54th6th1st1st10th
Evil Numbers (Long)
11th40th35th12th73rd20th12th41st7th
Farey Sequence
15th
9th
Fibonacci
30th
77th26th307th121st
918th35th
Fizz Buzz
30th62nd65th14th1,077th86th10th1,539th41st
Gijswijt’s Sequence
9th27th5th6th32nd6th8th70th6th
Happy Numbers
13th
28th18th147th27th
13th
Happy Numbers (Long)
12th36th31st12th86th21st9th228th9th
Leap Years
13th41st28th10th209th22nd5th180th8th
Niven Numbers
15th45th40th19th199th30th1st255th1st
Niven Numbers (Long)
20th47th33rd17th131st18th8th374th8th
Odious Numbers
13th33rd37th13th
6th1st1st11th
Odious Numbers (Long)
11th32nd35th12th68th21st12th1st7th
Pascal’s Triangle
14th51st20th12th137th14th8th492nd14th
Pernicious Numbers
34th
27th1st76th19th
Pernicious Numbers (Long)
15th34th16th11th53rd12th3rd93rd11th
Prime Numbers
18th55th47th18th211th37th20th561st29th
Prime Numbers (Long)
22nd44th29th15th112th24th9th196th16th
Sierpiński Triangle
4th26th8th4th14th14th4th81st5th