12 Days of Christmas
37th
99 Bottles of Beer
28th84th
Abundant Numbers
48th
21st
18th147th
Abundant Numbers (Long)
6th95th
Arithmetic Numbers
110th
Arrows
315th
Catalan Numbers
224th
Catalan’s Constant
13th
Christmas Trees
3rd250th
Collatz
22nd3rd
24th35th66th13th
14th5th
Day of Week
1st
Diamonds
59th
Divisors
52nd
62nd
14th86th169th46th
2nd1st
Emirp Numbers
15th15th
Emirp Numbers (Long)
163rd
Evil Numbers
81st68th
10th58th94th
26th315th
43rd
Evil Numbers (Long)
11th
57th
17th211th
Factorial Factorisation
183rd
Fibonacci
138th43rd128th
50th
1st74th1st1st44th9th1st21st185th
Fizz Buzz
18th
75th211th
Foo Fizz Buzz Bar
40th19th
Fractions
77th
12th102nd
Happy Numbers
50th
Happy Numbers (Long)
190th
Hilbert Curve
10th
Kolakoski Sequence
11th13th
Leap Years
22nd
43rd146th
Levenshtein Distance
175th
Leyland Numbers
15th323rd
Morse Encoder
65th
Niven Numbers
66th38th54th
30th43rd131st31st
20th147th
Niven Numbers (Long)
26th
15th109th
Odious Numbers
70th
10th
107th
25th153rd
Odious Numbers (Long)
51st
10th
64th
17th155th
Ordinal Numbers
47th
Pangram Grep
22nd117th
Pascal’s Triangle
110th
Pernicious Numbers
28th
36th95th
Prime Numbers
116th
33rd
158th
31st328th
Prime Numbers (Long)
223rd
Quine
137th
113th
72nd
Recamán
16th294th
Reverse Polish Notation
52nd
36th
Seven Segment
194th
Sierpiński Triangle
189th
Van Eck Sequence
202nd
𝑒
29th59th22nd9th52nd57th34th15th31st50th36th15th27th23rd13th14th
21st397th39th