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A056531 as a simple table

na(n)
11
23
37
413
519
625
727
831
939
1043
1149
1251
1361
1463
1567
1673
1779
1885
1987
2091
2199
22103
23109
24111
25121
26123
27127
28133
29139
30145
31147
32151
33159
34163
35169
36171
37181
38183
39187
40193
41199
42205
43207
44211
45219
46223
47229
48231
49241
50243
51247
52253
53259
54265
55267
56271
57279

[1,3,7,13,19,25,27,31,39,43,49,51,61,63,67,73,79,
 85,87,91,99,103,109,111,121,123,127,133,139,145,
 147,151,159,163,169,171,181,183,187,193,199,205,
 207,211,219,223,229,231,241,243,247,253,259,265,
 267,271,279]