12 Days of Christmas
30th
99 Bottles of Beer
26th276th
Abundant Numbers
44th
22nd
15th57th
Abundant Numbers (Long)
6th34th
Arithmetic Numbers
84th
Arrows
321st
Catalan Numbers
219th
Catalan’s Constant
13th
Christmas Trees
3rd221st
Collatz
18th3rd
25th36th67th18th
14th38th
Day of Week
1st
Diamonds
132nd
Divisors
52nd
63rd
13th89th170th47th
2nd1st
Emirp Numbers
16th116th
Emirp Numbers (Long)
157th
Evil Numbers
81st68th
10th59th95th
26th321st
46th
Evil Numbers (Long)
11th
59th
17th217th
Factorial Factorisation
183rd
Fibonacci
130th43rd129th
51st
1st80th1st1st44th9th1st22nd187th
Fizz Buzz
16th
75th59th
Foo Fizz Buzz Bar
40th1st
Fractions
77th
12th191st
Happy Numbers
66th
Happy Numbers (Long)
179th
Hilbert Curve
10th
Kolakoski Sequence
11th20th
Leap Years
22nd
43rd146th
Levenshtein Distance
166th
Leyland Numbers
15th327th
Morse Encoder
65th
Niven Numbers
65th38th55th
30th45th131st33rd
20th149th
Niven Numbers (Long)
26th
15th99th
Odious Numbers
71st
10th
107th
23rd157th
Odious Numbers (Long)
52nd
10th
64th
17th159th
Ordinal Numbers
113th
Pangram Grep
23rd62nd
Pascal’s Triangle
84th
Pernicious Numbers
29th
33rd95th
Prime Numbers
118th
34th
159th
32nd333rd
Prime Numbers (Long)
201st
Quine
137th
115th
75th
Recamán
16th296th
Reverse Polish Notation
53rd
96th
Seven Segment
178th
Sierpiński Triangle
182nd
Van Eck Sequence
195th
𝑒
29th60th22nd9th50th57th33rd14th31st49th36th16th27th23rd10th14th
20th401st40th