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.

A279766 Number of odd digits in the decimal expansions of integers 1 to n.

Table of values

n a(n)
0 0
1 1
2 1
3 2
4 2
5 3
6 3
7 4
8 4
9 5
10 6
11 8
12 9
13 11
14 12
15 14
16 15
17 17
18 18
19 20
20 20
21 21
22 21
23 22
24 22
25 23
26 23
27 24
28 24
29 25
30 26
31 28
32 29
33 31
34 32
35 34
36 35
37 37
38 38
39 40
40 40
41 41
42 41
43 42
44 42
45 43
46 43
47 44
48 44
49 45
50 46
51 48
52 49
53 51
54 52
55 54
56 55
57 57
58 58
59 60
60 60
61 61
62 61
63 62
64 62
65 63
66 63
67 64
68 64

List of values

[0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 6, 8, 9, 11, 12, 14, 15, 17, 18, 20, 20, 21, 21, 22, 22, 23, 23, 24, 24, 25, 26, 28, 29, 31, 32, 34, 35, 37, 38, 40, 40, 41, 41, 42, 42, 43, 43, 44, 44, 45, 46, 48, 49, 51, 52, 54, 55, 57, 58, 60, 60, 61, 61, 62, 62, 63, 63, 64, 64]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.