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.

A279035 Left-concatenate zeros to 2^(n-1) such that it has n digits. In the regular array formed by listing the found powers, a(n) is the sum of (nonzero) digits in column n.

Table of values

n a(n)
1 1
2 2
3 4
4 9
5 9
6 9
7 8
8 19
9 9
10 8
11 17
12 27
13 27
14 27
15 28
16 17
17 26
18 35
19 45
20 45
21 46
22 37
23 25
24 44
25 53
26 65
27 42
28 72
29 74
30 52
31 70
32 90
33 92
34 74
35 53
36 62
37 72
38 70
39 93
40 61
41 81
42 80
43 89
44 100
45 91
46 80
47 91
48 79
49 99
50 99
51 99
52 98
53 107
54 117
55 118
56 106
57 130
58 86
59 123
60 155
61 137
62 117
63 118
64 105
65 136

List of values

[1, 2, 4, 9, 9, 9, 8, 19, 9, 8, 17, 27, 27, 27, 28, 17, 26, 35, 45, 45, 46, 37, 25, 44, 53, 65, 42, 72, 74, 52, 70, 90, 92, 74, 53, 62, 72, 70, 93, 61, 81, 80, 89, 100, 91, 80, 91, 79, 99, 99, 99, 98, 107, 117, 118, 106, 130, 86, 123, 155, 137, 117, 118, 105, 136]