Abundant Numbers
15th41st31st13th218th24th12th200th23rd
Abundant Numbers (Long)
17th43rd26th14th111th19th12th108th16th
Collatz
18th43rd30th16th227th31st11th79th10th
Diamonds
25th19th
4th7th31st10th
Divisors
18th58th27th20th341st79th21st777th47th
Evil Numbers
11th31st35th12th52nd6th6th1st9th
Evil Numbers (Long)
11th38th33rd11th64th16th11th33rd6th
Farey Sequence
15th
8th
Fibonacci
23rd
70th22nd286th107th
847th31st
Fizz Buzz
29th56th62nd12th1,042nd85th10th1,114th41st
Gijswijt’s Sequence
8th24th5th5th32nd5th7th29th6th
Happy Numbers
11th
28th17th141st27th
14th
Happy Numbers (Long)
9th33rd28th11th78th22nd9th64th9th
Leap Years
12th34th26th8th192nd19th4th159th8th
Niven Numbers
15th40th35th17th184th32nd1st225th6th
Niven Numbers (Long)
17th43rd31st16th118th18th7th208th8th
Odious Numbers
12th29th34th12th
6th6th1st9th
Odious Numbers (Long)
11th28th33rd11th60th17th11th1st6th
Pascal’s Triangle
12th46th15th10th123rd17th7th274th13th
Pernicious Numbers
28th
27th1st65th16th
Pernicious Numbers (Long)
12th31st14th9th47th12th3rd53rd9th
Prime Numbers
15th47th43rd16th197th35th17th405th27th
Prime Numbers (Long)
20th38th27th13th103rd23rd8th168th15th
Sierpiński Triangle
3rd27th9th4th14th14th4th43rd5th