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A176180 Primes p such that gcd(p(n)-1, p(n+1)-1) != gcd(p(n)+1, p(n+1)+1).

Table of values

n a(n)
1 7
2 13
3 19
4 23
5 31
6 37
7 43
8 47
9 53
10 61
11 67
12 73
13 79
14 83
15 89
16 97
17 103
18 109
19 113
20 127
21 131
22 139
23 151
24 157
25 163
26 167
27 173
28 181
29 193
30 199
31 211
32 223
33 229
34 233
35 241
36 251
37 257
38 263
39 271
40 277
41 293
42 307
43 313
44 331
45 349
46 353
47 359
48 367
49 373
50 379
51 383
52 389
53 397
54 401
55 409
56 421

List of values

[7, 13, 19, 23, 31, 37, 43, 47, 53, 61, 67, 73, 79, 83, 89, 97, 103, 109, 113, 127, 131, 139, 151, 157, 163, 167, 173, 181, 193, 199, 211, 223, 229, 233, 241, 251, 257, 263, 271, 277, 293, 307, 313, 331, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 421]