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.

A049993 a(n) is the number of arithmetic progressions of 3 or more positive integers, nondecreasing with sum <= n.

Table of values

n a(n)
1 0
2 0
3 1
4 2
5 3
6 6
7 7
8 9
9 13
10 16
11 17
12 24
13 25
14 28
15 36
16 40
17 41
18 51
19 52
20 58
21 68
22 72
23 73
24 87
25 91
26 95
27 107
28 114
29 115
30 134
31 135
32 141
33 155
34 160
35 167
36 189
37 190
38 195
39 211
40 223
41 224
42 248
43 249
44 257
45 282
46 288
47 289
48 316
49 320
50 332
51 353
52 362
53 363
54 392
55 401
56 413
57 436
58 443
59 444
60 484
61 485
62 492
63 522
64 533
65 543
66 578

List of values

[0, 0, 1, 2, 3, 6, 7, 9, 13, 16, 17, 24, 25, 28, 36, 40, 41, 51, 52, 58, 68, 72, 73, 87, 91, 95, 107, 114, 115, 134, 135, 141, 155, 160, 167, 189, 190, 195, 211, 223, 224, 248, 249, 257, 282, 288, 289, 316, 320, 332, 353, 362, 363, 392, 401, 413, 436, 443, 444, 484, 485, 492, 522, 533, 543, 578]