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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.

A270970 Number of subsets of {1,...,n} with sum of elements equal to least common multiple of elements.

Table of values

n a(n)
1 1
2 2
3 4
4 5
5 6
6 8
7 9
8 11
9 14
10 16
11 17
12 21
13 22
14 24
15 28
16 31
17 32
18 37
19 38
20 53
21 56
22 57
23 58
24 71
25 72
26 73
27 77
28 85
29 86
30 131
31 132
32 138
33 141
34 142
35 143
36 163
37 164
38 165
39 167
40 289
41 290
42 310
43 311
44 316
45 403
46 404
47 405
48 454
49 455
50 458
51 460
52 463
53 464
54 478
55 479
56 557
57 559
58 560
59 561

List of values

[1, 2, 4, 5, 6, 8, 9, 11, 14, 16, 17, 21, 22, 24, 28, 31, 32, 37, 38, 53, 56, 57, 58, 71, 72, 73, 77, 85, 86, 131, 132, 138, 141, 142, 143, 163, 164, 165, 167, 289, 290, 310, 311, 316, 403, 404, 405, 454, 455, 458, 460, 463, 464, 478, 479, 557, 559, 560, 561]

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

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