A162872 - cp's OEIS frontend

A162872 Primes p such that p-1 and p+1 each contain at least one squared prime in their prime factorization.

n	a(n)
1	19
2	149
3	197
4	199
5	293
6	307
7	349
8	491
9	523
10	557
11	577
12	739
13	773
14	883
15	1013
16	1051
17	1061
18	1151
19	1171
20	1277
21	1451
22	1493
23	1531
24	1549
25	1601
26	1637
27	1667
28	1693
29	1709
30	1733
31	1747
32	1861
33	1949
34	2069
35	2141
36	2179
37	2251
38	2351
39	2357
40	2467
41	2549
42	2683
43	2789
44	2843
45	2851

[19, 149, 197, 199, 293, 307, 349, 491, 523, 557, 577, 739, 773, 883, 1013, 1051, 1061, 1151, 1171, 1277, 1451, 1493, 1531, 1549, 1601, 1637, 1667, 1693, 1709, 1733, 1747, 1861, 1949, 2069, 2141, 2179, 2251, 2351, 2357, 2467, 2549, 2683, 2789, 2843, 2851]

cp's OEIS Frontend

A162872 Primes p such that p-1 and p+1 each contain at least one squared prime in their prime factorization.

Table of values

List of values