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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.

A373716 a(n) is the number of distinct products i*j minus the number of distinct sums i+j with 1 <= i, j <= n.

Table of values

n a(n)
1 0
2 0
3 1
4 2
5 5
6 7
7 12
8 15
9 19
10 23
11 32
12 36
13 47
14 53
15 60
16 66
17 81
18 88
19 105
20 113
21 123
22 133
23 154
24 162
25 176
26 188
27 201
28 212
29 239
30 249
31 278
32 291
33 307
34 323
35 341
36 352
37 387
38 405
39 424
40 438
41 477
42 492
43 533
44 551
45 570
46 592
47 637
48 652
49 681
50 701
51 726
52 747
53 798
54 818
55 847
56 867
57 895

List of values

[0, 0, 1, 2, 5, 7, 12, 15, 19, 23, 32, 36, 47, 53, 60, 66, 81, 88, 105, 113, 123, 133, 154, 162, 176, 188, 201, 212, 239, 249, 278, 291, 307, 323, 341, 352, 387, 405, 424, 438, 477, 492, 533, 551, 570, 592, 637, 652, 681, 701, 726, 747, 798, 818, 847, 867, 895]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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