Abundant Numbers
15th40th31st13th218th24th12th765th23rd
Abundant Numbers (Long)
17th42nd26th14th111th19th12th385th16th
Collatz
18th42nd30th16th227th31st11th368th10th
Diamonds
22nd19th
4th7th49th10th
Divisors
18th58th27th20th341st79th21st1,194th47th
Evil Numbers
11th31st35th12th52nd6th1st1st9th
Evil Numbers (Long)
11th37th33rd11th64th16th11th33rd6th
Farey Sequence
15th
8th
Fibonacci
23rd
70th22nd286th107th
845th31st
Fizz Buzz
29th55th62nd12th1,042nd85th10th1,459th41st
Gijswijt’s Sequence
8th23rd5th5th29th5th7th61st6th
Happy Numbers
11th
27th17th139th27th
13th
Happy Numbers (Long)
9th32nd28th11th77th22nd9th202nd9th
Leap Years
12th36th26th8th192nd19th4th158th8th
Niven Numbers
15th40th35th17th184th32nd1st225th1st
Niven Numbers (Long)
17th42nd31st16th118th18th7th340th8th
Odious Numbers
12th29th34th12th
6th1st1st9th
Odious Numbers (Long)
11th28th33rd11th60th17th11th1st6th
Pascal’s Triangle
12th45th15th10th123rd17th7th455th13th
Pernicious Numbers
28th
27th1st65th16th
Pernicious Numbers (Long)
12th29th14th9th47th12th3rd71st9th
Prime Numbers
15th47th43rd16th197th35th17th512th27th
Prime Numbers (Long)
20th38th27th13th103rd23rd8th169th15th
Sierpiński Triangle
2nd22nd8th4th14th14th4th66th5th