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.

A179878 Numbers h such that h and h-1 have same antiharmonic mean of the numbers k < h such that gcd(k, h) = 1 and simultaneously this mean is an integer (see A179882).

Table of values

n a(n)
1 2
2 11
3 23
4 47
5 59
6 83
7 107
8 167
9 179
10 227
11 263
12 266
13 347
14 359
15 383
16 455
17 467
18 470
19 479
20 494
21 503
22 506
23 518
24 563
25 587
26 590
27 719
28 782
29 839
30 863
31 887
32 890
33 902
34 911
35 935
36 983
37 986
38 1019
39 1166
40 1178
41 1187
42 1235
43 1283
44 1295
45 1307
46 1319
47 1334
48 1358
49 1367
50 1394

List of values

[2, 11, 23, 47, 59, 83, 107, 167, 179, 227, 263, 266, 347, 359, 383, 455, 467, 470, 479, 494, 503, 506, 518, 563, 587, 590, 719, 782, 839, 863, 887, 890, 902, 911, 935, 983, 986, 1019, 1166, 1178, 1187, 1235, 1283, 1295, 1307, 1319, 1334, 1358, 1367, 1394]