A162873 - cp's OEIS frontend

A162873 List of pairs (p,r) of twin primes p and r=p+2 such that p-1, p+1 and r+1 are all divisible by squares > 1.

n	a(n)
1	17
2	19
3	149
4	151
5	197
6	199
7	269
8	271
9	521
10	523
11	809
12	811
13	881
14	883
15	1049
16	1051
17	1061
18	1063
19	1277
20	1279
21	1949
22	1951
23	1997
24	1999
25	2141
26	2143
27	2549
28	2551
29	2789
30	2791
31	2969
32	2971
33	3257
34	3259
35	3329
36	3331
37	3581
38	3583
39	3821
40	3823
41	4049
42	4051
43	4157
44	4159
45	4229
46	4231

[17, 19, 149, 151, 197, 199, 269, 271, 521, 523, 809, 811, 881, 883, 1049, 1051, 1061, 1063, 1277, 1279, 1949, 1951, 1997, 1999, 2141, 2143, 2549, 2551, 2789, 2791, 2969, 2971, 3257, 3259, 3329, 3331, 3581, 3583, 3821, 3823, 4049, 4051, 4157, 4159, 4229, 4231]

cp's OEIS Frontend

A162873 List of pairs (p,r) of twin primes p and r=p+2 such that p-1, p+1 and r+1 are all divisible by squares > 1.

Table of values

List of values