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A160785 as a simple table

na(n)
13
27
311
415
523
627
731
835
939
1043
1147
1259
1363
1467
1571
1675
1779
1883
1987
2095
21103
22107
23111
24115
25119
26123
27131
28135
29139
30143
31147
32155
33159
34167
35171
36175
37179
38183
39187
40191
41195
42203
43207
44211
45215
46219
47223
48227
49231
50239
51247
52255
53259
54263
55267
56275
57279

[3,7,11,15,23,27,31,35,39,43,47,59,63,67,71,75,79,
 83,87,95,103,107,111,115,119,123,131,135,139,143,
 147,155,159,167,171,175,179,183,187,191,195,203,
 207,211,215,219,223,227,231,239,247,255,259,263,
 267,275,279]