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.

A069212 a(n) = Sum_{k=1..n} 3^omega(k).

Table of values

n a(n)
1 1
2 4
3 7
4 10
5 13
6 22
7 25
8 28
9 31
10 40
11 43
12 52
13 55
14 64
15 73
16 76
17 79
18 88
19 91
20 100
21 109
22 118
23 121
24 130
25 133
26 142
27 145
28 154
29 157
30 184
31 187
32 190
33 199
34 208
35 217
36 226
37 229
38 238
39 247
40 256
41 259
42 286
43 289
44 298
45 307
46 316
47 319
48 328
49 331
50 340
51 349
52 358
53 361
54 370
55 379
56 388
57 397

List of values

[1, 4, 7, 10, 13, 22, 25, 28, 31, 40, 43, 52, 55, 64, 73, 76, 79, 88, 91, 100, 109, 118, 121, 130, 133, 142, 145, 154, 157, 184, 187, 190, 199, 208, 217, 226, 229, 238, 247, 256, 259, 286, 289, 298, 307, 316, 319, 328, 331, 340, 349, 358, 361, 370, 379, 388, 397]