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.

A024871 s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers >= 2), t = A023532.

Table of values

n a(n)
2 0
3 2
4 5
5 3
6 6
7 5
8 9
9 12
10 17
11 16
12 22
13 21
14 26
15 24
16 31
17 39
18 48
19 47
20 55
21 53
22 63
23 61
24 72
25 70
26 82
27 93
28 106
29 104
30 118
31 116
32 131
33 129
34 145
35 141
36 157
37 154
38 171
39 189
40 208
41 206
42 226
43 224
44 243
45 240
46 261
47 258
48 280
49 277
50 300
51 297
52 321
53 346
54 370
55 367
56 393
57 390
58 417
59 414
60 442
61 439
62 468
63 465
64 495

List of values

[0, 2, 5, 3, 6, 5, 9, 12, 17, 16, 22, 21, 26, 24, 31, 39, 48, 47, 55, 53, 63, 61, 72, 70, 82, 93, 106, 104, 118, 116, 131, 129, 145, 141, 157, 154, 171, 189, 208, 206, 226, 224, 243, 240, 261, 258, 280, 277, 300, 297, 321, 346, 370, 367, 393, 390, 417, 414, 442, 439, 468, 465, 495]