Abundant Numbers
16th44th31st14th224th24th12th207th23rd
Abundant Numbers (Long)
18th46th26th15th119th19th12th112th16th
Collatz
20th45th30th17th235th31st11th81st10th
Diamonds
27th19th
4th7th31st10th
Divisors
18th60th27th20th342nd79th21st790th46th
Evil Numbers
11th33rd36th13th53rd6th6th1st10th
Evil Numbers (Long)
11th40th34th12th68th17th12th35th7th
Farey Sequence
15th
9th
Fibonacci
26th
71st23rd291st108th
872nd33rd
Fizz Buzz
30th57th63rd13th1,054th85th10th1,133rd41st
Gijswijt’s Sequence
8th24th5th6th35th5th8th30th6th
Happy Numbers
11th
29th18th143rd27th
14th
Happy Numbers (Long)
10th35th29th11th80th22nd9th66th9th
Leap Years
12th37th27th8th199th19th4th166th8th
Niven Numbers
15th43rd35th18th192nd32nd1st231st6th
Niven Numbers (Long)
18th44th31st17th124th18th8th218th8th
Odious Numbers
12th31st35th13th
6th6th1st11th
Odious Numbers (Long)
11th30th34th12th64th18th12th1st7th
Pascal’s Triangle
13th46th17th12th131st17th7th281st14th
Pernicious Numbers
29th
28th1st67th17th
Pernicious Numbers (Long)
14th34th14th10th50th12th3rd54th10th
Prime Numbers
16th50th44th17th204th35th18th420th28th
Prime Numbers (Long)
22nd39th28th14th107th23rd8th173rd16th
Sierpiński Triangle
4th28th9th4th14th14th4th43rd5th