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.

A160383 Number of 3's in base-4 representation of n.

Table of values

n a(n)
0 0
1 0
2 0
3 1
4 0
5 0
6 0
7 1
8 0
9 0
10 0
11 1
12 1
13 1
14 1
15 2
16 0
17 0
18 0
19 1
20 0
21 0
22 0
23 1
24 0
25 0
26 0
27 1
28 1
29 1
30 1
31 2
32 0
33 0
34 0
35 1
36 0
37 0
38 0
39 1
40 0
41 0
42 0
43 1
44 1
45 1
46 1
47 2
48 1
49 1
50 1
51 2
52 1
53 1
54 1
55 2
56 1
57 1
58 1
59 2
60 2
61 2
62 2
63 3
64 0
65 0
66 0
67 1
68 0
69 0
70 0
71 1
72 0
73 0
74 0
75 1
76 1
77 1
78 1
79 2
80 0
81 0
82 0
83 1
84 0
85 0
86 0
87 1
88 0
89 0
90 0
91 1
92 1
93 1
94 1
95 2
96 0
97 0
98 0
99 1
100 0
101 0
102 0
103 1
104 0

List of values

[0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 2, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 2, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 2, 2, 2, 3, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 2, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 2, 0, 0, 0, 1, 0, 0, 0, 1, 0]