A179876 - cp's OEIS frontend

A179876 Numbers h such that h and h-1 have same antiharmonic mean of the numbers k < h such that gcd(k, h) = 1.

n	a(n)
1	2
2	7
3	11
4	23
5	47
6	59
7	66
8	70
9	78
10	83
11	107
12	130
13	167
14	179
15	186
16	195
17	211
18	222
19	227
20	238
21	255
22	263
23	266
24	310
25	322
26	331
27	347
28	359
29	366
30	383
31	399
32	418
33	438
34	455
35	463
36	467
37	470
38	474
39	479
40	483
41	494
42	498
43	503

[2, 7, 11, 23, 47, 59, 66, 70, 78, 83, 107, 130, 167, 179, 186, 195, 211, 222, 227, 238, 255, 263, 266, 310, 322, 331, 347, 359, 366, 383, 399, 418, 438, 455, 463, 467, 470, 474, 479, 483, 494, 498, 503]

cp's OEIS Frontend

A179876 Numbers h such that h and h-1 have same antiharmonic mean of the numbers k < h such that gcd(k, h) = 1.

Table of values

List of values

n	a(n)
1	2
2	7
3	11
4	23
5	47
6	59
7	66
8	70
9	78
10	83
11	107
12	130
13	167
14	179
15	186
16	195
17	211
18	222
19	227
20	238
21	255
22	263
23	266
24	310
25	322
26	331
27	347
28	359
29	366
30	383
31	399
32	418
33	438
34	455
35	463
36	467
37	470
38	474
39	479
40	483
41	494
42	498
43	503

n	a(n)
1	2
2	7
3	11
4	23
5	47
6	59
7	66
8	70
9	78
10	83
11	107
12	130
13	167
14	179
15	186
16	195
17	211
18	222
19	227
20	238
21	255
22	263
23	266
24	310
25	322
26	331
27	347
28	359
29	366
30	383
31	399
32	418
33	438
34	455
35	463
36	467
37	470
38	474
39	479
40	483
41	494
42	498
43	503

n	a(n)
1	2
2	7
3	11
4	23
5	47
6	59
7	66
8	70
9	78
10	83
11	107
12	130
13	167
14	179
15	186
16	195
17	211
18	222
19	227
20	238
21	255
22	263
23	266
24	310
25	322
26	331
27	347
28	359
29	366
30	383
31	399
32	418
33	438
34	455
35	463
36	467
37	470
38	474
39	479
40	483
41	494
42	498
43	503