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A044447 as a simple table

na(n)
15
223
337
453
569
695
7101
8117
9133
10151
11165
12181
13197
14215
15229
16245
17261
18279
19293
20309
21383
22389
23407
24421
25437
26453
27471
28485
29501
30517
31535
32549
33565
34581
35607
36613
37629
38645
39663
40677
41693
42709
43727
44741
45757
46773
47791

[5,23,37,53,69,95,101,117,133,151,165,181,197,215,
 229,245,261,279,293,309,383,389,407,421,437,453,
 471,485,501,517,535,549,565,581,607,613,629,645,
 663,677,693,709,727,741,757,773,791]