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A243656 as a simple table

na(n)
11
23
39
413
517
623
727
829
939
1043
1151
1253
1361
1469
1579
1681
1787
18101
19103
20107
21113
22117
23127
24129
25131
26139
27153
28157
29159
30173
31179
32181
33183
34191
35199
36207
37211
38221
39233
40237
41243
42251
43257
44261
45263
46269
47277
48283
49289
50299
51303
52309

[1,3,9,13,17,23,27,29,39,43,51,53,61,69,79,81,87,
 101,103,107,113,117,127,129,131,139,153,157,159,
 173,179,181,183,191,199,207,211,221,233,237,243,
 251,257,261,263,269,277,283,289,299,303,309]