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.

A002815 a(n) = n + Sum_{k=1..n} pi(k), where pi() = A000720.

Table of values

n a(n)
0 0
1 1
2 3
3 6
4 9
5 13
6 17
7 22
8 27
9 32
10 37
11 43
12 49
13 56
14 63
15 70
16 77
17 85
18 93
19 102
20 111
21 120
22 129
23 139
24 149
25 159
26 169
27 179
28 189
29 200
30 211
31 223
32 235
33 247
34 259
35 271
36 283
37 296
38 309
39 322
40 335
41 349
42 363
43 378
44 393
45 408
46 423
47 439
48 455
49 471

List of values

[0, 1, 3, 6, 9, 13, 17, 22, 27, 32, 37, 43, 49, 56, 63, 70, 77, 85, 93, 102, 111, 120, 129, 139, 149, 159, 169, 179, 189, 200, 211, 223, 235, 247, 259, 271, 283, 296, 309, 322, 335, 349, 363, 378, 393, 408, 423, 439, 455, 471]