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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.

A349180 Coreful harmonic numbers: nonsquarefree numbers k such that the harmonic mean of the coreful divisors of k is an integer.

Table of values

n a(n)
1 12
2 18
3 36
4 56
5 60
6 75
7 84
8 90
9 126
10 132
11 150
12 156
13 168
14 180
15 198
16 204
17 228
18 234
19 240
20 252
21 276
22 280
23 306
24 342
25 348
26 351
27 372
28 392
29 396
30 414
31 420
32 444
33 450
34 468
35 492
36 504
37 516
38 522
39 525
40 558
41 564
42 588
43 612
44 616
45 630
46 636
47 660
48 666
49 684
50 702
51 708
52 720
53 726
54 728

List of values

[12, 18, 36, 56, 60, 75, 84, 90, 126, 132, 150, 156, 168, 180, 198, 204, 228, 234, 240, 252, 276, 280, 306, 342, 348, 351, 372, 392, 396, 414, 420, 444, 450, 468, 492, 504, 516, 522, 525, 558, 564, 588, 612, 616, 630, 636, 660, 666, 684, 702, 708, 720, 726, 728]

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

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