cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A180938 Smallest k such that k*n has an even number of 1's in its base-2 expansion.

Table of values

n a(n)
1 3
2 3
3 1
4 3
5 1
6 1
7 9
8 3
9 1
10 1
11 3
12 1
13 3
14 9
15 1
16 3
17 1
18 1
19 3
20 1
21 3
22 3
23 1
24 1
25 3
26 3
27 1
28 9
29 1
30 1
31 33
32 3
33 1
34 1
35 3
36 1
37 3
38 3
39 1
40 1
41 3
42 3
43 1
44 3
45 1
46 1
47 3
48 1
49 3
50 3
51 1
52 3
53 1
54 1
55 3
56 9
57 1
58 1
59 3
60 1
61 3
62 33
63 1
64 3
65 1
66 1
67 3
68 1
69 3
70 3
71 1
72 1
73 3
74 3
75 1
76 3
77 1
78 1
79 3
80 1
81 3
82 3
83 1
84 3
85 1
86 1
87 5
88 3
89 1
90 1
91 5
92 1
93 11
94 3
95 1
96 1
97 3
98 3
99 1
100 3
101 1
102 1
103 9
104 3
105 1

List of values

[3, 3, 1, 3, 1, 1, 9, 3, 1, 1, 3, 1, 3, 9, 1, 3, 1, 1, 3, 1, 3, 3, 1, 1, 3, 3, 1, 9, 1, 1, 33, 3, 1, 1, 3, 1, 3, 3, 1, 1, 3, 3, 1, 3, 1, 1, 3, 1, 3, 3, 1, 3, 1, 1, 3, 9, 1, 1, 3, 1, 3, 33, 1, 3, 1, 1, 3, 1, 3, 3, 1, 1, 3, 3, 1, 3, 1, 1, 3, 1, 3, 3, 1, 3, 1, 1, 5, 3, 1, 1, 5, 1, 11, 3, 1, 1, 3, 3, 1, 3, 1, 1, 9, 3, 1]