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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.

A101114 Let t(G) = number of unitary factors of the Abelian group G. Then a(n) = sum t(G) over all Abelian groups G of order <= n.

Table of values

n a(n)
1 1
2 3
3 5
4 9
5 11
6 15
7 17
8 23
9 27
10 31
11 33
12 41
13 43
14 47
15 51
16 61
17 63
18 71
19 73
20 81
21 85
22 89
23 91
24 103
25 107
26 111
27 117
28 125
29 127
30 135
31 137
32 151
33 155
34 159
35 163
36 179
37 181
38 185
39 189
40 201
41 203
42 211
43 213
44 221
45 229
46 233
47 235
48 255
49 259
50 267
51 271
52 279
53 281
54 293
55 297
56 309
57 313
58 317

List of values

[1, 3, 5, 9, 11, 15, 17, 23, 27, 31, 33, 41, 43, 47, 51, 61, 63, 71, 73, 81, 85, 89, 91, 103, 107, 111, 117, 125, 127, 135, 137, 151, 155, 159, 163, 179, 181, 185, 189, 201, 203, 211, 213, 221, 229, 233, 235, 255, 259, 267, 271, 279, 281, 293, 297, 309, 313, 317]