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.

A333194 a(n) = Sum_{k=1..n} (ceiling(n/k) mod 2) * k.

Table of values

n a(n)
1 1
2 2
3 4
4 4
5 8
6 8
7 11
8 11
9 19
10 16
11 21
12 21
13 30
14 30
15 37
16 29
17 45
18 45
19 51
20 51
21 66
22 56
23 67
24 67
25 88
26 83
27 96
28 84
29 105
30 105
31 112
32 112
33 144
34 130
35 147
36 135
37 159
38 159
39 178
40 162
41 197
42 197
43 208
44 208
45 241
46 209
47 232
48 232
49 277
50 270
51 290
52 270
53 309
54 309
55 324
56 308
57 357
58 335
59 364
60 364

List of values

[1, 2, 4, 4, 8, 8, 11, 11, 19, 16, 21, 21, 30, 30, 37, 29, 45, 45, 51, 51, 66, 56, 67, 67, 88, 83, 96, 84, 105, 105, 112, 112, 144, 130, 147, 135, 159, 159, 178, 162, 197, 197, 208, 208, 241, 209, 232, 232, 277, 270, 290, 270, 309, 309, 324, 308, 357, 335, 364, 364]