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A155140 Primes p such that both p-+4 are not squarefree.

Table of values

n a(n)
1 293
2 347
3 571
4 829
5 1021
6 1229
7 1327
8 1373
9 1471
10 1621
11 2111
12 2129
13 2371
14 2531
15 2579
16 2879
17 2887
18 3181
19 3271
20 3929
21 4621
22 4801
23 4909
24 5279
25 5333
26 5521
27 5639
28 5683
29 5827
30 6133
31 6421
32 6521
33 6709
34 6863
35 6871
36 7079
37 7321
38 7529
39 7591
40 8179
41 8221
42 8429
43 8963

List of values

[293, 347, 571, 829, 1021, 1229, 1327, 1373, 1471, 1621, 2111, 2129, 2371, 2531, 2579, 2879, 2887, 3181, 3271, 3929, 4621, 4801, 4909, 5279, 5333, 5521, 5639, 5683, 5827, 6133, 6421, 6521, 6709, 6863, 6871, 7079, 7321, 7529, 7591, 8179, 8221, 8429, 8963]