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.

A179887 Nonprimes q such that antiharmonic mean B(q) of the numbers k < q such that gcd(k, q) = 1 is an integer, where B(q) = A053818(q) / A023896(q) = A175505(q) / A175506(q).

Table of values

n a(n)
1 1
2 10
3 22
4 34
5 46
6 55
7 58
8 82
9 85
10 91
11 94
12 106
13 110
14 115
15 118
16 133
17 142
18 145
19 166
20 170
21 178
22 182
23 187
24 202
25 205
26 214
27 217
28 226
29 230
30 235
31 247
32 253
33 259
34 262
35 265
36 266
37 274
38 290
39 295
40 298
41 301
42 319
43 334
44 346
45 355
46 358
47 374
48 382
49 391
50 394
51 403
52 410
53 415
54 427

List of values

[1, 10, 22, 34, 46, 55, 58, 82, 85, 91, 94, 106, 110, 115, 118, 133, 142, 145, 166, 170, 178, 182, 187, 202, 205, 214, 217, 226, 230, 235, 247, 253, 259, 262, 265, 266, 274, 290, 295, 298, 301, 319, 334, 346, 355, 358, 374, 382, 391, 394, 403, 410, 415, 427]

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

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