A179877 - cp's OEIS frontend

A179877 Numbers h such that h and h+1 have same contraharmonic mean of the numbers k < h such that gcd(k, h) = 1 and simultaneously this mean is an integer (see A179882).

n	a(n)
1	1
2	10
3	22
4	46
5	58
6	82
7	106
8	166
9	178
10	226
11	262
12	265
13	346
14	358
15	382
16	454
17	466
18	469
19	478
20	493
21	502
22	505
23	517
24	562
25	586
26	589
27	718
28	781
29	838
30	862
31	886
32	889
33	901
34	910
35	934
36	982
37	985
38	1018
39	1165
40	1177
41	1186
42	1234
43	1282
44	1294
45	1306
46	1318
47	1333
48	1357
49	1366
50	1393

[1, 10, 22, 46, 58, 82, 106, 166, 178, 226, 262, 265, 346, 358, 382, 454, 466, 469, 478, 493, 502, 505, 517, 562, 586, 589, 718, 781, 838, 862, 886, 889, 901, 910, 934, 982, 985, 1018, 1165, 1177, 1186, 1234, 1282, 1294, 1306, 1318, 1333, 1357, 1366, 1393]

cp's OEIS Frontend

A179877 Numbers h such that h and h+1 have same contraharmonic mean of the numbers k < h such that gcd(k, h) = 1 and simultaneously this mean is an integer (see A179882).

Table of values

List of values