A216101 - cp's OEIS frontend

A216101 Primes which are the integer harmonic mean of the previous prime and the following prime.

n	a(n)
1	13
2	19
3	43
4	47
5	83
6	89
7	103
8	109
9	131
10	167
11	193
12	229
13	233
14	313
15	349
16	353
17	359
18	383
19	389
20	409
21	443
22	449
23	463
24	503
25	643
26	647
27	677
28	683
29	691
30	709
31	797
32	823
33	859
34	883
35	919
36	941
37	971
38	983
39	1013
40	1093
41	1097
42	1109
43	1171
44	1193
45	1217
46	1279
47	1283
48	1303
49	1373
50	1429
51	1433

[13, 19, 43, 47, 83, 89, 103, 109, 131, 167, 193, 229, 233, 313, 349, 353, 359, 383, 389, 409, 443, 449, 463, 503, 643, 647, 677, 683, 691, 709, 797, 823, 859, 883, 919, 941, 971, 983, 1013, 1093, 1097, 1109, 1171, 1193, 1217, 1279, 1283, 1303, 1373, 1429, 1433]

cp's OEIS Frontend

A216101 Primes which are the integer harmonic mean of the previous prime and the following prime.

Table of values

List of values