A261395 - cp's OEIS frontend

A261395 Primes p such that (prime(p)-1)^2 = (prime(q)-1)*(prime(r)-1) for some pair of distinct primes q and r.

n	a(n)
1	13
2	47
3	137
4	191
5	193
6	223
7	227
8	313
9	701
10	857
11	907
12	947
13	991
14	1009
15	1069
16	1291
17	1531
18	1889
19	2281
20	2411
21	2447
22	2647
23	3181
24	3389
25	3539
26	3593
27	4093
28	4099
29	4409
30	4481
31	4603
32	4721
33	5557
34	5647
35	6581
36	6793
37	6869
38	6961
39	7211
40	7349
41	7523
42	7723
43	7753
44	8461
45	8537
46	8543
47	8807
48	9137
49	9241
50	9281

[13, 47, 137, 191, 193, 223, 227, 313, 701, 857, 907, 947, 991, 1009, 1069, 1291, 1531, 1889, 2281, 2411, 2447, 2647, 3181, 3389, 3539, 3593, 4093, 4099, 4409, 4481, 4603, 4721, 5557, 5647, 6581, 6793, 6869, 6961, 7211, 7349, 7523, 7723, 7753, 8461, 8537, 8543, 8807, 9137, 9241, 9281]

cp's OEIS Frontend

A261395 Primes p such that (prime(p)-1)^2 = (prime(q)-1)*(prime(r)-1) for some pair of distinct primes q and r.

Table of values

List of values