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.

A320642 Number of 1's in the base-(-2) expansion of -n.

Table of values

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

List of values

[2, 1, 3, 2, 4, 3, 2, 1, 3, 2, 4, 3, 5, 4, 3, 2, 4, 3, 5, 4, 6, 5, 4, 3, 5, 4, 3, 2, 4, 3, 2, 1, 3, 2, 4, 3, 5, 4, 3, 2, 4, 3, 5, 4, 6, 5, 4, 3, 5, 4, 6, 5, 7, 6, 5, 4, 6, 5, 4, 3, 5, 4, 3, 2, 4, 3, 5, 4, 6, 5, 4, 3, 5, 4, 6, 5, 7, 6, 5, 4, 6, 5, 7, 6, 8, 7, 6]