12 Days of Christmas
14th14th
5th127th10th
Abundant Numbers
31st12th207th41st14th773rd22nd
Abundant Numbers (Long)
26th13th103rd29th14th379th15th
Arithmetic Numbers
8th11th87th28th13th333rd14th
Arrows
3rd5th
5th7th51st5th
ASCII Table
15th
70th20th8th234th7th
Collatz
31st17th207th34th13th383rd9th
Divisors
26th15th331st76th18th1,157th45th
Evil Numbers
35th13th56th22nd16th111th11th
Evil Numbers (Long)
33rd9th36th14th6th135th6th
Farey Sequence
9th
Fibonacci
60th28th279th126th
814th22nd
Fizz Buzz
60th22nd1,050th210th46th1,621st66th
Leap Years
26th7th187th26th4th147th8th
Niven Numbers
33rd22nd174th31st
244th25th
Niven Numbers (Long)
30th14th107th16th14th318th13th
Odious Numbers
35th13th46th20th12th81st11th
Odious Numbers (Long)
33rd9th32nd15th6th65th6th
Pascalβs Triangle
15th11th115th16th7th396th13th
Pernicious Numbers
25th4th43rd23rd1st59th14th
Prime Numbers
37th
34th18th289th25th
Prime Numbers (Long)
27th
99th21st7th156th12th