12 Days of Christmas
18th14th
6th158th12th
Abundant Numbers
39th16th240th51st17th883rd24th
Abundant Numbers (Long)
34th17th131st39th17th468th16th
Arithmetic Numbers
12th13th123rd36th15th450th12th
Arrows
6th6th
6th8th75th7th
ASCII Table
18th
87th22nd11th296th12th
Collatz
40th18th259th28th15th485th11th
Divisors
33rd19th361st83rd22nd1,270th49th
Evil Numbers
44th15th60th29th18th149th12th
Evil Numbers (Long)
40th11th43rd20th8th171st7th
Farey Sequence
11th
Fibonacci
78th37th315th154th
934th23rd
Fizz Buzz
71st27th1,138th222nd50th1,775th71st
Leap Years
33rd10th220th29th5th187th9th
Niven Numbers
43rd27th203rd39th
291st33rd
Niven Numbers (Long)
36th16th137th18th18th390th16th
Odious Numbers
43rd15th54th27th15th113th13th
Odious Numbers (Long)
40th11th38th21st8th94th7th
Pascal’s Triangle
22nd14th132nd15th9th460th14th
Pernicious Numbers
36th7th51st24th1st81st20th
Prime Numbers
46th
38th24th350th30th
Prime Numbers (Long)
31st
122nd25th10th199th17th